Glassfish example source code file (MappingFile.java)
The Glassfish MappingFile.java source code/*
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/*
* MappingFile.java
*
* Created on February 1, 2002, 9:47 PM
*/
package com.sun.jdo.api.persistence.mapping.ejb;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.File;
import java.util.Collection;
import java.util.Map;
import java.util.List;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.ResourceBundle;
import java.util.Iterator;
import java.io.IOException;
import java.text.MessageFormat;
import org.netbeans.modules.dbschema.*;
import com.sun.jdo.api.persistence.mapping.ejb.beans.*;
import com.sun.jdo.spi.persistence.utility.StringHelper;
import com.sun.jdo.api.persistence.model.*;
import com.sun.jdo.api.persistence.model.mapping.*;
import com.sun.jdo.api.persistence.model.mapping.impl.*;
import com.sun.jdo.api.persistence.model.jdo.*;
import com.sun.jdo.api.persistence.model.jdo.impl.*;
import com.sun.jdo.spi.persistence.utility.logging.Logger;
import org.glassfish.persistence.common.I18NHelper;
import org.netbeans.modules.schema2beans.Schema2BeansException;
/** This class supports the conversion between the iAS mapping file
* format and the object used to represent that mapping to support
* the iAS EJBC process and iAS CMP run-time.
*
* @author vbk
* @version 1.0
*/
public class MappingFile {
private static final String JAVA_TYPE_SET = "java.util.Set"; //NOI18N
private static final String JAVA_TYPE_COLLECTION = "java.util.Collection"; //NOI18N
private static final List types = new ArrayList();
/** Definitive location for a mapping file in an ejb-jar file. */
public static final String DEFAULT_LOCATION_IN_EJB_JAR;
/** The logger */
private static final Logger logger =
LogHelperMappingConversion.getLogger();
/**
* I18N message handler
*/
private final static ResourceBundle messages = I18NHelper.loadBundle(
MappingFile.class);
static {
types.add(JAVA_TYPE_SET);
types.add(JAVA_TYPE_COLLECTION);
DEFAULT_LOCATION_IN_EJB_JAR = new StringBuffer(I18NHelper.getMessage(
messages, "CONST_IAS_MAPPING_FILE_LOC")). //NOI18N
append(File.separator).
append(I18NHelper.getMessage(
messages, "CONST_IAS_MAPPING_FILE")).toString(); //NOI18N
}
private Map inverseRelationships = null;
private Map namedGroups = null;
private int groupCount = MappingFieldElement.GROUP_INDEPENDENT;
private ClassLoader classLoader = null;
private static int MINIMUM_PRECISION = 19;
/**
* An object which implements ConversionHelper interface to
* access data from other available sources to support the mapping
* generation.
*/
private ConversionHelper helper = null;
private HashMap loadedSchema = new HashMap();
/** Creates new MappingFile */
public MappingFile() {
classLoader = null;
}
/** Creates new MappingFile */
public MappingFile(ClassLoader cl) {
this();
classLoader = cl;
}
/** Convert an SunCmpMapping object into the equivelent collection of
* MappingClassElement objects
* @param content An SunCmpMapping object that describes a mapping
* for one or more beans
* @param helper An object which implements ConversionHelper interface to
* access data from other available sources to support the mapping
* generation
* @return A Collection of MappingClassElement objects
* @throws DBException
* @throws ModelException
* @throws ConversionException
*/
public Map intoMappingClasses(SunCmpMappings content,
ConversionHelper helper)
throws DBException, ModelException, ConversionException {
Map mces = new java.util.HashMap();
this.helper = helper;
boolean ensureValidation = helper.ensureValidation();
for (int i = 0; i < content.sizeSunCmpMapping(); i++) {
SunCmpMapping beanSet = content.getSunCmpMapping(i);
inverseRelationships = new HashMap();
namedGroups = new HashMap();
String schema = beanSet.getSchema();
if (helper.generateFields()) {
// sweep through the mappings to complete them
completeCmrMappings(beanSet);
}
// process bean mapping and fields mapping
for (int k = 0; k < beanSet.sizeEntityMapping(); k++) {
EntityMapping beanMapping = beanSet.getEntityMapping(k);
MappingClassElement aTpMapping = null;
if (ensureValidation) {
aTpMapping = mapFieldsOfBean(beanMapping, schema);
}
else {
try {
aTpMapping = mapFieldsOfBean(beanMapping, schema);
}
catch (ConversionException t) {
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_CONV_EXC", //NOI18N
t.toString()));
}
}
mces.put(beanMapping.getEjbName(), aTpMapping);
}
}
return mces;
}
/** Convert an SunCmpMapping object into the equivelent collection of
* MappingClassElement objects
* @param content An InputStream that contains an xml data stream that
* conforms to the sun-cmp-mapping.dtd
* @param helper An object which implements ConversionHelper interface to
* access data from other available sources to support the mapping
* generation
* @return A Collection of MappingClassElement objects
* @throws DBException
* @throws ModelException
* @throws ConversionException
*/
public Map intoMappingClasses(InputStream content, ConversionHelper helper)
throws DBException, ModelException, ConversionException {
SunCmpMappings foo = null;
try {
foo = SunCmpMappings.createGraph(content);
}
catch (Schema2BeansException t) {
if (helper.ensureValidation()) {
throw new ConversionException(
I18NHelper.getMessage(messages,
"XML_ERROR_IN_MAPPING_FILE", //NOI18N
DEFAULT_LOCATION_IN_EJB_JAR));
}
foo = SunCmpMappings.createGraph();
}
return intoMappingClasses(foo, helper);
}
/** Creates an SunCmpMapping object from a Collection of
* MappingClassElement objects
* @param dest The output for processing
* @param mappingClasses The Collection of MappingClassElements
* @param helper An object which implements ConversionHelper interface to
* access data from other available sources to support the mapping
* generation
* @throws IOException Thrown if there is a problem
* sending the data out on <CODE>dest.
* @throws Schema2BeansException
*/
public void fromMappingClasses(OutputStream dest, Map mappingClasses,
ConversionHelper helper)
throws IOException, Schema2BeansException {
SunCmpMappings tmp = fromMappingClasses(mappingClasses, helper);
tmp.write(dest);
}
/** Creates an SunCmpMapping object from a Collection of
* MappingClassElement objects
* @param mappingClasses The Collection of MappingClassElements
* @param helper An object which implements ConversionHelper interface to
* access data from other available sources to support the mapping
* generation.
* @return The SunCmpMapping object that is equivelent to the
* collection of MappingClassElements.
* throws Schema2BeansException
*/
public SunCmpMappings fromMappingClasses(Map mappingClasses,
ConversionHelper helper) throws Schema2BeansException {
Iterator keyIter = mappingClasses.keySet().iterator();
Map mapOfMapping = new java.util.HashMap();
while (keyIter.hasNext()) {
String ejbName = (String) keyIter.next();
MappingClassElement mce = (MappingClassElement)
mappingClasses.get(ejbName);
EntityMapping beanMapping = new EntityMapping();
if (null != mce) {
setConsistency(mce, beanMapping);
String schemaName = mce.getDatabaseRoot();
SunCmpMapping aMapping = (SunCmpMapping) mapOfMapping.get(
schemaName);
if (null == aMapping) {
aMapping = new SunCmpMapping();
aMapping.setSchema(schemaName);
mapOfMapping.put(schemaName, aMapping);
}
List tables = mce.getTables();
MappingTableElement primary = null;
if (tables.size() > 0) {
primary = (MappingTableElement) tables.get(0);
beanMapping.setTableName(primary.getName());
}
beanMapping.setEjbName(ejbName);
if (null != primary) {
List refKeys = primary.getReferencingKeys();
for (int i = 0; refKeys != null && i < refKeys.size(); i++) {
SecondaryTable sT = new SecondaryTable();
MappingReferenceKeyElement mrke =
(MappingReferenceKeyElement) refKeys.get(i);
MappingTableElement mte = mrke.getTable();
if (null != mte) {
sT.setTableName(mte.getName());
List cpnames = mrke.getColumnPairNames();
boolean hasPairs = false;
for (int j = 0; cpnames != null &&
j < cpnames.size(); j++) {
List token =
StringHelper.separatedListToArray((String)cpnames.get(j),";"); //NOI18N
ColumnPair cp = new ColumnPair();
Iterator iter = token.iterator();
while (iter.hasNext()) {
String columnName = (String)iter.next();
cp.addColumnName(columnName);
}
sT.addColumnPair(cp);
hasPairs = true;
}
if (hasPairs)
beanMapping.addSecondaryTable(sT);
else
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"WARN_ILLEGAL_PAIR", //NOI18N
new Object [] {ejbName, mte.getName(), cpnames}));
}
else {
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"WARN_MISSING_TABLE", //NOI18N
new Object [] {ejbName, primary.getName()}));
}
}
}
else {
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"WARN_NO_PRIMARY", //NOI18N
ejbName));
}
// transform the field mappings
PersistenceClassElement pce = null;
PersistenceFieldElement pfields[] = null;
if (mce instanceof MappingClassElementImpl) {
MappingClassElementImpl mcei =
(MappingClassElementImpl) mce;
pce = mcei.getPersistenceElement();
pfields = pce.getFields();
}
int len = 0;
if (null != pfields)
len = pfields.length;
for (int i = 0; i < len; i++) {
PersistenceFieldElement pfield = pfields[i];
String fieldName = pfield.getName();
if (helper.isGeneratedField(ejbName, fieldName)) {
continue;
}
if (pfield instanceof RelationshipElement) {
MappingRelationshipElement mre =
(MappingRelationshipElement) mce.getField(fieldName);
MappingFieldElement mfe = mre;
CmrFieldMapping cfm = new CmrFieldMapping();
cfm.setCmrFieldName(fieldName);
List cols = null;
if (null != mfe) {
cols = mfe.getColumns();
int fgVal = mfe.getFetchGroup();
setFetchedWith(cfm, fgVal);
}
for (int j = 0; null != cols && j < cols.size(); j++) {
String cpstring = (String) cols.get(j);
int slen = cpstring.indexOf(';');
ColumnPair cp = new ColumnPair();
cp.addColumnName(cpstring.substring(0,slen));
cp.addColumnName(cpstring.substring(slen+1));
cfm.addColumnPair(cp);
}
if (null != mre)
cols = mre.getAssociatedColumns();
for (int j = 0; null != cols && j < cols.size(); j++) {
String cpstring = (String) cols.get(j);
int slen = cpstring.indexOf(';');
ColumnPair cp = new ColumnPair();
cp.addColumnName(cpstring.substring(0,slen));
cp.addColumnName(cpstring.substring(slen+1));
cfm.addColumnPair(cp);
}
beanMapping.addCmrFieldMapping(cfm);
}
else {
MappingFieldElement mfe = mce.getField(fieldName);
CmpFieldMapping cfm = new CmpFieldMapping();
cfm.setFieldName(fieldName);
List cols = null;
if (null != mfe) {
cols = mfe.getColumns();
for (int j = 0; null != cols &&
j < cols.size(); j++) {
cfm.addColumnName((String)cols.get(j));
}
int fgVal = mfe.getFetchGroup();
setFetchedWith(cfm,fgVal);
}
beanMapping.addCmpFieldMapping(cfm);
}
}
aMapping.addEntityMapping(beanMapping);
}
}
SunCmpMappings retVal = null;
retVal = new SunCmpMappings();
Iterator mapOfMappingIter = mapOfMapping.values().iterator();
while (mapOfMappingIter.hasNext()) {
SunCmpMapping aVal = (SunCmpMapping) mapOfMappingIter.next();
retVal.addSunCmpMapping(aVal);
}
return retVal;
}
/** Set fetchgroup in schema2beans FetchedWith bean
* @param cfm An object that represents HasFetchedWith object
* in schema2beans
* @param fgVal integer that represents fetch group value
*/
private void setFetchedWith(HasFetchedWith cfm, int fgVal) {
FetchedWith fw = new FetchedWith();
if (fgVal <= MappingFieldElement.GROUP_INDEPENDENT) {
String key = "IndependentFetchGroup"+fgVal; //NOI18N
fw.setNamedGroup(key);
}
else if (fgVal == MappingFieldElement.GROUP_DEFAULT) {
fw.setDefault(true);
}
else if (fgVal > MappingFieldElement.GROUP_DEFAULT) {
fw.setLevel(fgVal-1);
}
else if (fgVal == MappingFieldElement.GROUP_NONE) {
fw.setNone(true);
}
cfm.setFetchedWith(fw);
}
/** Convert a bean's cmp-field-mapping and cmr-field-mapping elements into
* mapping model objects.
*
* The method can be called in two distinct cases:
*
* 1. At deployment time. The mapping must be complete enough to create a
* valid mapping model, in order to support execution.
*
* 2. During mapping development. The mapping may be incomplete, but the
* model objects that are created need to be as consistent as possible.
* The absence of data should not be fatal, if possible.
*
* @param mapping The schema2beans object that represents the mapping
* for a particular bean.
* @param schemaArg The name of the schema that the bean is mapped against.
* @return The MappingClassElement that corresponds to the
* schema2beans object.
* @throws DBException
* @throws ModelException
* @throws ConversionException
*/
private MappingClassElement mapFieldsOfBean(EntityMapping mapping,
String schemaArg)
throws DBException, ModelException, ConversionException {
String beanName = mapping.getEjbName();
MappingClassElement mce = null;
List tablesOfBean = new ArrayList();
Map knownTables = new HashMap();
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_START_BEAN", //NOI18N
beanName));
String jdoClassName = helper.getMappedClassName(beanName);
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_JDOCLASS_NAME", //NOI18N
beanName, jdoClassName));
if (null == jdoClassName) {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_INVALID_CLASS", //NOI18N
beanName));
}
// create the mapping class element and its children
PersistenceClassElementImpl persistElImpl =
new PersistenceClassElementImpl(jdoClassName);
persistElImpl.setKeyClass(jdoClassName+".Oid"); //NOI18N
mce = new MappingClassElementImpl(
new PersistenceClassElement(persistElImpl));
SchemaElement schema = null;
// Assign the schema
if (!StringHelper.isEmpty(schemaArg))
schema = setDatabaseRoot(mce, schemaArg,
helper.ensureValidation());
// Map the table information
// Ensure the bean is mapped to a primary table.
if (!StringHelper.isEmpty(mapping.getTableName())) {
mapPrimaryTable(mapping, mce,
schema, knownTables, tablesOfBean);
mapSecondaryTables(mapping, mce,
schema, knownTables, tablesOfBean);
}
ColumnElement candidatePK = null;
// map the simple fields.
candidatePK = mapNonRelationshipFields(mapping, mce,
beanName, schema, knownTables);
createMappingForUnknownPKClass(mapping, mce,
beanName, candidatePK);
createMappingForConsistency(mapping, mce,
beanName, knownTables);
// map the relationship fields.
mapRelationshipFields(mapping, mce,
beanName, schema, knownTables, tablesOfBean);
// map any unmapped fields.
mapUnmappedFields(mce, beanName);
return mce;
}
/** Create field mapping for unknown primary key
* @param mapping The schema2beans object that represents the mapping
* for a particular bean.
* @param mce Mapping class element
* @param beanName Bean name
* @param candidatePK A ColumnElement object which is a candidate column for
* mapping to primary key field if it is unknown primary key
* @throws ModelException
* @throws ConversionException
*/
private void createMappingForUnknownPKClass(EntityMapping mapping,
MappingClassElement mce,
String beanName,
ColumnElement candidatePK)
throws ModelException, ConversionException {
String primaryTableName = mapping.getTableName();
if (helper.generateFields()
&& helper.applyDefaultUnknownPKClassStrategy(beanName)) {
if (null != candidatePK) {
String fieldName = helper.getGeneratedPKFieldName();
// Fix later. Since mapping and persistence classes in the
// cache are only skeletons and not the one we want,
// put pce in a map at pce creation time for persistence
// class look up later to avoid a cast
// to MappingClassElementImpl.
PersistenceFieldElement pfe = createPersistenceField(mce,
fieldName);
pfe.setKey(true);
MappingFieldElement mfe = createMappingField(mce, fieldName,
candidatePK);
}
else {
// There is no column which meets primary key criteria.
// Report error.
throw new ConversionException(
I18NHelper.getMessage(
messages,
"WARN_NO_PKCOLUMN", //NOI18N
primaryTableName));
}
}
}
/** Load the consistency information. if it is version consistency, create
* field mapping for version columns.
* @param mapping The schema2beans object that represents the mapping
* for a particular bean.
* @param mce Mapping class element
* @param beanName Bean name
* @param knownTables A Map which contains primary and secondary tables
* for beans in the set. Keys: table names Values: TableElement objects
* @throws ModelException
* @throws DBException
* @throws ConversionException
*/
private void createMappingForConsistency(EntityMapping mapping,
MappingClassElement mce,
String beanName,
Map knownTables)
throws ModelException, DBException, ConversionException {
// load the consistency information
List versionColumns = loadConsistency(mapping, mce);
// If the consistency level is version consistency, the version field
// is always created, independent of the ConversionHelper's value for
// generateFields. This is because a generated version field is
// needed to hold the version column information.
if (versionColumns != null) {
String primaryTableName = mapping.getTableName();
// For 8.1 release, we only support one version column per bean
if (versionColumns.size() > 1) {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_INVALID_VERSION_COLUMNS")); //NOI18N
}
String versionColumn = (String)versionColumns.get(0);
String sourceTableName = getTableName(versionColumn,
primaryTableName);
// we do not support version column from secondary table
// in 8.1 release
if (!sourceTableName.equals(primaryTableName)) {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"WARN_VERSION_COLUMN_INVALID_TABLE", //NOI18N
primaryTableName, beanName, versionColumn));
}
TableElement sourceTableEl = (TableElement) knownTables.get(
sourceTableName);
String versionColumnName = getColumnName(versionColumn);
ColumnElement versionCol = getColumnElement(sourceTableEl,
DBIdentifier.create(versionColumnName), helper);
if (null != versionCol) {
// Since 8.1 release only support one version column per bean,
// use prefix as the version field name
String fieldName = helper.getGeneratedVersionFieldNamePrefix();
PersistenceFieldElement pfe = createPersistenceField(mce,
fieldName);
MappingFieldElement mfe = createMappingField(mce, fieldName,
versionCol);
mfe.setVersion(true);
}
else {
// There is no version column.
// Report error.
throw new ConversionException(
I18NHelper.getMessage(
messages,
"WARN_VERSION_COLUMN_MISSING", //NOI18N
primaryTableName, beanName));
}
}
}
/** Map simple cmp field to MappingFieldElement
* @param mapping The schema2beans object that represents the mapping
* for a particular bean.
* @param mce Mapping class element
* @param beanName Bean name
* @param schema dbschema information for all beans
* @param knownTables A Map which contains primary and secondary tables
* for beans in the set. Keys: table names Values: TableElement objects
* @return candidate primary key column for unknown
* primary key class mapping, if applicable
* @throws DBException
* @throws ModelException
* @throws ConversionException
*/
private ColumnElement mapNonRelationshipFields(EntityMapping mapping,
MappingClassElement mce,
String beanName,
SchemaElement schema,
Map knownTables)
throws DBException, ModelException, ConversionException {
CmpFieldMapping [] mapOfFields = mapping.getCmpFieldMapping();
String primaryTableName = mapping.getTableName();
ColumnElement candidatePK = null;
// get candidate column only used for unknown primary key
if (helper.generateFields()
&& helper.applyDefaultUnknownPKClassStrategy(beanName)) {
candidatePK = getCandidatePK(schema, primaryTableName);
}
for (int i = 0; i < mapOfFields.length; i++) {
CmpFieldMapping mapForOneField = mapOfFields[i];
String fieldName = mapForOneField.getFieldName();
if (!validateField(mce, beanName, fieldName,
helper.ensureValidation())) {
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"WARN_INVALID_FIELD", //NOI18N
beanName, fieldName));
continue;
}
String columnNames[] = mapForOneField.getColumnName();
MappingFieldElement mfe = createUnmappedField(mce, beanName,
fieldName);
boolean fieldMappedToABlob = false;
for (int j = 0; j < columnNames.length; j++) {
String sourceTableName = getTableName(columnNames[j],
primaryTableName);
if (null == sourceTableName) {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_UNDEFINED_TABLE")); //NOI18N
}
String sourceColumnName = getColumnName(columnNames[j]);
// get the table element
TableElement sourceTableEl = getTableElement(sourceTableName,
knownTables, schema);
ColumnElement aCol = getColumnElement(sourceTableEl,
DBIdentifier.create(sourceColumnName), helper);
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_ADD_COLUMN", //NOI18N
new Object [] {aCol, fieldName}));
// If candidatePK is mapped to a field, then it can not
// treated as a primary key for unknown primary key
if (helper.generateFields()
&& helper.applyDefaultUnknownPKClassStrategy(beanName)) {
if (candidatePK != null && candidatePK.equals(aCol)) {
candidatePK = null;
}
}
fieldMappedToABlob |= aCol.isBlobType();
mfe.addColumn(aCol);
}
FetchedWith fw = mapForOneField.getFetchedWith();
setFetchGroup(fw, mfe, beanName, fieldMappedToABlob);
mce.addField(mfe);
}
return candidatePK;
}
/**
* Converts entity mapping relationship information from sun-cmp-mappings.xml
* into JDO mapping file information.
*
* @param mapping The schema2beans object that represents the mapping
* for a particular bean.
* @param mce Mapping class element being populated corresponding to the bean.
* @param beanName Bean name.
* @param knownTables A Map which contains primary and secondary tables
* for beans in the set. Keys: table names Values: TableElement objects
* @param tablesOfBean contains primary table and
* secondary tables of the bean <code>beanName.
* @throws ModelException
* @throws DBException
* @throws ConversionException
*/
private void mapRelationshipFields(EntityMapping mapping,
MappingClassElement mce,
String beanName,
SchemaElement schema,
Map knownTables,
List tablesOfBean)
throws ModelException, DBException, ConversionException {
String primaryTableName = mapping.getTableName();
CmrFieldMapping mapOfRelations[] = mapping.getCmrFieldMapping();
PersistenceClassElement pce = ((MappingClassElementImpl)mce).getPersistenceElement();
for (int i = 0; mapOfRelations != null && i < mapOfRelations.length;
i++) {
CmrFieldMapping aRelation = mapOfRelations[i];
String fieldName = aRelation.getCmrFieldName();
if (!validateField(mce, beanName, fieldName, helper.ensureValidation())) {
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"WARN_INVALID_CMRFIELD", //NOI18N
beanName, fieldName));
continue;
}
RelationshipElement rel = new RelationshipElement(
new RelationshipElementImpl(fieldName), pce);
MappingRelationshipElement mre =
new MappingRelationshipElementImpl(fieldName, mce);
// Register the inverse RelationshipElement
registerInverseRelationshipElement(rel, beanName, fieldName);
final ColumnPair pairs[] = aRelation.getColumnPair();
final String relationId = mapping.getEjbName() + "_Relationship_" + i; //NOI18N
Collection primaryTableColumns = convertToColumnPairElements(
pairs,
primaryTableName, schema, knownTables, tablesOfBean,
relationId,
mre);
setUpperBound(rel, beanName, fieldName);
setCascadeDeleteAction(rel, beanName, fieldName);
setLowerBound(rel,
primaryTableColumns,
primaryTableName,schema, knownTables,
beanName, fieldName);
setFetchGroup(aRelation.getFetchedWith(), mre, beanName, false);
pce.addField(rel);
mce.addField(mre);
}
}
/** Map unmapped field to mapping field object.
* @param mce Mapping class element
* @param beanName Bean name
* @throws ModelException
*/
private void mapUnmappedFields(MappingClassElement mce, String beanName)
throws ModelException {
Object[] fields = helper.getFields(beanName);
if (!helper.ensureValidation()) {
for (int i = 0; i < fields.length; i++) {
String fieldName = (String) fields[i];
MappingFieldElement mfe = mce.getField(fieldName);
if (null == mfe) {
// this field needs a mapping created for it...
mfe = createUnmappedField(mce, beanName, fieldName);
mce.addField(mfe);
}
}
}
}
/** Set consistency from MappingClassElement into schema2beans
* Consistency bean.
* @param mce An object that represents the mapping object
* @param beanMapping The schema2beans object that represents the mapping
* for a particular bean.
*/
private void setConsistency(MappingClassElement mce,
EntityMapping beanMapping) {
int consistency = mce.getConsistencyLevel();
if (MappingClassElement.NONE_CONSISTENCY != consistency) {
Consistency c = new Consistency();
if (MappingClassElement.LOCK_WHEN_MODIFIED_CHECK_ALL_AT_COMMIT_CONSISTENCY == consistency) {
c.setLockWhenModified(true);
c.setCheckAllAtCommit(true);
}
if (MappingClassElement.LOCK_WHEN_MODIFIED_CONSISTENCY == consistency)
c.setLockWhenModified(true);
if (MappingClassElement.CHECK_ALL_AT_COMMIT_CONSISTENCY == consistency)
c.setCheckAllAtCommit(true);
if (MappingClassElement.LOCK_WHEN_LOADED_CONSISTENCY == consistency)
c.setLockWhenLoaded(true);
if (MappingClassElement.CHECK_MODIFIED_AT_COMMIT_CONSISTENCY == consistency)
c.setCheckModifiedAtCommit(true);
if (MappingClassElement.VERSION_CONSISTENCY == consistency) {
CheckVersionOfAccessedInstances versionIns =
new CheckVersionOfAccessedInstances();
Iterator iter = mce.getVersionFields().iterator();
while (iter.hasNext()) {
List columnNames = ((MappingFieldElement)iter.next()).
getColumns();
// vesion field only allow to map to one column
if (columnNames != null && columnNames.size() > 0)
versionIns.addColumnName((String)columnNames.get(0));
}
c.setCheckVersionOfAccessedInstances(versionIns);
}
beanMapping.setConsistency(c);
}
}
/** Load consistency from schema2beans into MappingClassElement
* @param mapping The schema2beans object that represents the mapping
* for a particular bean.
* @param mce An object that represents mapping object
* @return a list of version column names if applicable; return null
* otherwise.
* @throws ModelException
* @throws ConversionException
*/
private List loadConsistency(EntityMapping mapping, MappingClassElement mce)
throws ModelException, ConversionException {
Consistency c = mapping.getConsistency();
if (null == c) {
mce.setConsistencyLevel(MappingClassElement.NONE_CONSISTENCY);
}
else {
CheckVersionOfAccessedInstances versionIns =
(CheckVersionOfAccessedInstances)
c.getCheckVersionOfAccessedInstances();
if (c.isCheckModifiedAtCommit())
mce.setConsistencyLevel(
MappingClassElement.CHECK_MODIFIED_AT_COMMIT_CONSISTENCY);
else if(c.isLockWhenLoaded())
mce.setConsistencyLevel(
MappingClassElement.LOCK_WHEN_LOADED_CONSISTENCY);
else if(c.isCheckAllAtCommit())
mce.setConsistencyLevel(
MappingClassElement.CHECK_ALL_AT_COMMIT_CONSISTENCY);
else if(c.isLockWhenModified())
mce.setConsistencyLevel(
MappingClassElement.LOCK_WHEN_MODIFIED_CONSISTENCY);
else if(c.isLockWhenModified() && c.isCheckAllAtCommit())
mce.setConsistencyLevel(MappingClassElement.
LOCK_WHEN_MODIFIED_CHECK_ALL_AT_COMMIT_CONSISTENCY);
else if(c.isNone())
mce.setConsistencyLevel(MappingClassElement.NONE_CONSISTENCY);
else if (versionIns != null) {
mce.setConsistencyLevel(MappingClassElement.VERSION_CONSISTENCY);
List versionColumns = new ArrayList();
for (int i = 0; i < versionIns.sizeColumnName(); i++) {
versionColumns.add(versionIns.getColumnName(i));
}
return versionColumns;
}
else {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_INVALID_CONSISTENCY_VALUE", mce)); //NOI18N
}
}
return null;
}
/** Map the primary table of the bean.
* @param mapping The schema2beans object that represents the mapping
* for a particular bean.
* @param mce Mapping class element
* @param schema dbschema information for all beans
* @param knownTables A Map which contains primary and secondary tables
* for beans in the set. Keys: table names Values: TableElement objects
* @param tablesOfBean contains primary table and
* secondary tables of the bean corresponding to the <code>mapping
* @throws DBException
* @throws ModelException
* @throws ConversionException
*/
private void mapPrimaryTable(EntityMapping mapping,
MappingClassElement mce,
SchemaElement schema,
Map knownTables,
List tablesOfBean)
throws DBException, ModelException, ConversionException {
String primaryTableName = mapping.getTableName();
TableElement primTabEl = getTableElement(primaryTableName, knownTables, schema);
mce.addTable(primTabEl);
tablesOfBean.add(primaryTableName);
}
/** Get the candidate pk column for unknown primary key.
* @param schema dbschema information for all beans
* @param primaryTableName Primary table name
* @return candidate pk column which will be used for unknown primary key,
* if applicable
* @throws DBException
* @throws ConversionException
*/
private ColumnElement getCandidatePK(SchemaElement schema,
String primaryTableName)
throws DBException, ConversionException {
ColumnElement candidatePK = null;
TableElement primTabEl = getTableElement(schema,
DBIdentifier.create(primaryTableName), helper);
// Check if the candidatePK is really satisfying primary key
// criteria. It will be used only for unknown primary key.
UniqueKeyElement uke = primTabEl.getPrimaryKey();
if (null != uke) {
ColumnElement cols[] = uke.getColumns();
if (null != cols && 1 == cols.length) {
candidatePK = cols[0];
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_CANDIDATE_PK", //NOI18N
candidatePK.getName()));
Integer pre = candidatePK.getPrecision();
if (null != candidatePK && !candidatePK.isNumericType()) {
candidatePK = null;
}
if (null != candidatePK && (null != pre) && pre.intValue() < MINIMUM_PRECISION) {
candidatePK = null;
}
}
}
return candidatePK;
}
/**
* Converts column pair information from sun-cmp-mappings.xml into
* column pair elements from the JDO mapping definition.
*
* @param pairs ColumnPair information from sun-cmp-mappings.xml.
* @param primaryTableName Name of the bean's primary table.
* @param schema dbschema information for all beans.
* @param knownTables A Map which contains primary and secondary tables
* for beans in the set. Keys: table names Values: TableElement objects
* @param tablesOfBean contains primary table and
* secondary tables of the bean corresponding to the <code>mre's
* declaring class.
* @param relationId Relationship id used to name the ColumnPairElements.
* @param mre Mapping relationship element (== JDO information).
* @return Collection of column elements, including all columns from the
* current cmr definition that are part of the primary table.
* @throws DBException
* @throws ModelException
* @throws ConversionException
*/
private Collection convertToColumnPairElements(ColumnPair pairs[],
String primaryTableName,
SchemaElement schema,
Map knownTables,
List tablesOfBean,
String relationId,
MappingRelationshipElement mre)
throws DBException, ModelException, ConversionException {
Collection primaryTableColumns = new ArrayList();
boolean isJoin = false;
for (int i = 0; null != pairs && i < pairs.length; i++) {
ColumnPair pair = pairs[i];
ColumnPairElement cpe = new ColumnPairElement();
boolean localSet = false;
cpe.setName(DBIdentifier.create(relationId + "_ColumnPair_" + i)); //NOI18N
for (int j = 0; j < 2; j++) {
String columnName = pair.getColumnName(j);
String sourceTableName = getTableName(columnName,
primaryTableName);
String sourceColumnName = getColumnName(columnName);
TableElement sourceTableEl = getTableElement(sourceTableName,
knownTables, schema);
ColumnElement ce = getColumnElement(sourceTableEl,
DBIdentifier.create(sourceColumnName), helper);
ce.toString();
// tablesOfBean stores the primary table and the secondary
// tables for the bean.
// It can be used for checking join table if sourceTableName
// is not in the tablesOfBean.
// If it is join table, should use addLocalColumn instead of
// addColumn.
if (j == 0) {
if (tablesOfBean.contains(sourceTableName)) {
localSet = true;
// Remember local columns for lower bound determination.
primaryTableColumns.add(ce);
}
else {
// join table
isJoin = true;
localSet = false;
}
}
if (cpe.getLocalColumn() == null) {
cpe.setLocalColumn(ce);
}
else {
cpe.setReferencedColumn(ce);
}
}
if (localSet) {
if (!isJoin) {
mre.addColumn(cpe);
}
else {
mre.addLocalColumn(cpe);
}
}
else if (isJoin) {
mre.addAssociatedColumn(cpe);
}
}
return primaryTableColumns;
}
/**
* If a non-collection relationship field is mapped to a
* non-nullable column, the lower bound of the relationship might
* be set to 1. To set the lower bound, we have to determine the
* dependent side of the relationship. We set the lower bound to 1
* based on the following rules:
*
* <ul>
* <li>If the non-nullable column is not part of the primary key.
* <li>If the local side has got a foreign key.
* <li>If the local columns are a real subset of the primary key.
* <li>If the user specified the local side for cascade delete.
* </ul>
*
* @param rel JDO relationship information being constructed.
* @param primaryTableColumns Collection of all columns from the
* current cmr definition that are part of the primary table.
* @param primaryTableName Name of the bean's primary table.
* @param knownTables A Map which contains primary and secondary tables
* for beans in the set. Keys: table names Values: TableElement objects
* @param schema dbschema information for all beans.
* @param beanName Bean name.
* @param fieldName Relationship field name.
* @throws ModelException
* @throws DBException
* @throws ConversionException
*/
private void setLowerBound(RelationshipElement rel,
Collection primaryTableColumns,
String primaryTableName,
SchemaElement schema,
Map knownTables,
String beanName,
String fieldName)
throws ModelException, DBException,
ConversionException {
rel.setLowerBound(0);
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_LWB_NULL", //NOI18N
beanName, fieldName));
if (1 == rel.getUpperBound() && null != primaryTableName) {
boolean isPartOfPrimaryKey = false;
TableElement primaryTable = getTableElement(primaryTableName,
knownTables, schema);
UniqueKeyElement pk = primaryTable.getPrimaryKey();
ForeignKeyElement fks[] = primaryTable.getForeignKeys();
Iterator iter = primaryTableColumns.iterator();
while (iter.hasNext() && 0 == rel.getLowerBound()) {
ColumnElement ce = (ColumnElement) iter.next();
if (!ce.isNullable()) {
isPartOfPrimaryKey |= isPartOfPrimaryKey(ce, pk);
if (!isPartOfPrimaryKey) {
// We suppose that all primary key columns are non-nullable.
// If the non-nullable column is not part of the primary key,
// this is the dependent side.
rel.setLowerBound(1);
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_LWB_NOPK", //NOI18N
beanName, fieldName));
}
// Check the foreign key constraint
else if (isPartOfForeignKey(ce, fks)) {
// If the non-nullable column is part of the foreign key,
// this is the dependent side.
rel.setLowerBound(1);
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_LWB_FK", //NOI18N
beanName, fieldName));
}
}
}
if (0 == rel.getLowerBound() && isPartOfPrimaryKey) {
// The lower bound is still unset and all local columns
// are part of the primary key.
if (primaryTableColumns.size() < pk.getColumns().length) {
// The local columns are a real subset of the primary key.
// ==> This must be the dependent side.
rel.setLowerBound(1);
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_LWB_PKSUBSET", //NOI18N
beanName, fieldName));
}
else if (isCascadeDelete(beanName, fieldName)) {
// This relationship side is marked as dependent side by the user.
rel.setLowerBound(1);
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_LWB_CASCADE", //NOI18N
beanName, fieldName));
}
else {
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_LWB_NODEPENDENT", //NOI18N
beanName, fieldName));
}
}
}
}
/**
* Looks up the table element for <code>tableName in the
* table element cache <code>knownTables. If the table
* element is not found, the table name is looked up in the
* database schema and registered in the cache.
*
* @param tableName Table name.
* @param knownTables A Map which contains primary and secondary tables
* for beans in the set. Keys: table names Values: TableElement objects
* @param schema dbschema information for all beans.
* @return Table element for table <code>tableName.
* @exception DBException
* @exception ConversionException
*/
private TableElement getTableElement(String tableName,
Map knownTables,
SchemaElement schema)
throws DBException, ConversionException {
TableElement te = (TableElement) knownTables.get(tableName);
if (null == te) {
te = getTableElement(schema, DBIdentifier.create(tableName),
helper);
knownTables.put(tableName, te);
}
return te;
}
/**
* Checks, if the column <code>ce is part of the
* primary key <code>pk.
* RESOLVE: Method isPrimaryKeyColumn in ModelValidator
* implements similar functionality.
*
* @param ce Column element for the column to be tested.
* @param pk Primary key element. The column to be tested
* <b>must be defined in the same table.
* @return True, if the column is part of the primary key,
* false otherwise.
* @see com.sun.jdo.api.persistence.model.util.ModelValidator
*/
private boolean isPartOfPrimaryKey(ColumnElement ce, UniqueKeyElement pk) {
return null != pk && ce.equals(pk.getColumn(ce.getName()));
}
/**
* Checks, if the column <code>ce is part of one
* of the foreign key constraints defined in <code>fks.
* RESOLVE: Method matchesFK in ModelValidator implements similar
* functionality.
*
* @param ce Column element for the column to be tested.
* @param fks Array of foreign key elements. The column to be
* tested <b>must be defined in the same table.
* @return True, if the column is part of one of the foreign keys,
* false otherwise.
* @see com.sun.jdo.api.persistence.model.util.ModelValidator
*/
private boolean isPartOfForeignKey(ColumnElement ce,
ForeignKeyElement[] fks) {
// RESOLVE: Column ce might be included in multiple foreign
// keys. The foreign key check applies to ALL relationships
// mapped to column ce. How can we find out, that a foreign
// key matches exactly the relationship being checked here?
if (fks != null) {
for (int index = 0; index < fks.length; index++) {
if (ce.equals(fks[index].getColumn(ce.getName()))) {
// The current ce is part of the foreign key.
return true;
}
}
}
return false;
}
/**
* Returns the cascade delete setting for the current relationship side.
* The ConversionHelper interface provides cascade delete information
* for the related side only.
*
* @param beanName Bean name.
* @param fieldName Relationship field name.
* @return True, if the current relationship side is marked for cascade delete,
* false otherwise.
*/
private boolean isCascadeDelete(String beanName, String fieldName) {
final String beanInField = helper.getRelationshipFieldContent(beanName, fieldName);
final String inverseField = helper.getInverseFieldName(beanName,
fieldName);
return (null != beanInField && null != inverseField) ?
helper.relatedObjectsAreDeleted(beanInField, inverseField) : false;
}
/**
* Registers relationship element <code>rel in the cache
* mapping field names to inverse relationship elements. The
* inverse bean- and field names for the registration are
* determined with the conversion helper. Returns the
* relationship element for the inverse field, if this field has
* been already processed, null otherwise.
*
* @param rel JDO relationship information being constructed.
* @param beanName Bean name.
* @param fieldName Relationship field name.
* @return The relationship element for the inverse field, if this field
* has been already processed, null otherwise.
* @throws ModelException
*/
private RelationshipElement registerInverseRelationshipElement(
RelationshipElement rel, String beanName, String fieldName)
throws ModelException {
String key = beanName + "." + fieldName; //NOI18N
RelationshipElement inverse = (RelationshipElement) inverseRelationships.get(key);
if (null == inverse) {
final String beanInField = helper.getRelationshipFieldContent(
beanName, fieldName);
final String inverseField = helper.getInverseFieldName(beanName,
fieldName);
if (null != beanInField && null != inverseField) {
key = beanInField + "." + inverseField; //NOI18N
inverseRelationships.put(key, rel);
}
}
else {
rel.changeInverseRelationship(inverse);
inverse.changeInverseRelationship(rel);
}
return inverse;
}
/**
* Sets the upper bound for relationship element <code>rel
* depending on the upper bound information from the deployment
* descriptor and defines the element class for collection
* relationship fields.
*
* @param rel JDO relationship information being constructed.
* @param beanName Bean name.
* @param fieldName Relationship field name.
* @throws ModelException
* @throws ConversionException
*/
private void setUpperBound(RelationshipElement rel,
String beanName, String fieldName)
throws ModelException, ConversionException {
String beanInField = helper.getRelationshipFieldContent(beanName,
fieldName);
String classInJdoField = helper.getMappedClassName(beanInField);
String multiplicity = helper.getMultiplicity(beanName, fieldName);
// Set the upper bound.
if (multiplicity.equals(helper.MANY)) {
rel.setUpperBound(Integer.MAX_VALUE);
rel.setElementClass(classInJdoField);
String collectionClass = helper.getRelationshipFieldType(beanName,
fieldName);
if (types.contains(collectionClass)) {
rel.setCollectionClass(collectionClass);
}
else {
rel.setCollectionClass(null);
if (logger.isLoggable(Logger.WARNING))
logger.warning(
I18NHelper.getMessage(
messages,
"WARN_INVALID_RELATIONSHIP_FIELDTYPE", //NOI18N
beanName, fieldName, collectionClass));
}
}
else if (multiplicity.equals(helper.ONE)) {
rel.setUpperBound(1);
// Fix later. This code should be removed because in one side
// setElementClass should not be called.
// This line of code is for bug 4665051 which is plugin bug.
// It is likely that bug 4665051 indicates that there is code
// in the plugin which depends on the element class being set
// for a one side relationship.
rel.setElementClass(classInJdoField);
}
else {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_BAD_MULTIPLICTY", //NOI18N
multiplicity, rel.getName()));
}
}
/**
* Sets the cascade delete option for relationship element
* <code>rel depending on the information from the
* deployment descriptor. While the deployment descriptor
* specifies cascade delete option on the dependent side, JDO
* specifies it on the primary side. For this reason, the
* information must be "switched".
*
* @param rel JDO relationship information being constructed.
* @param beanName Bean name.
* @param fieldName Relationship field name.
* @throws ModelException
*/
private void setCascadeDeleteAction(RelationshipElement rel,
String beanName, String fieldName)
throws ModelException {
if (helper.relatedObjectsAreDeleted(beanName, fieldName)) {
if (logger.isLoggable(Logger.FINE))
logger.fine(
I18NHelper.getMessage(
messages,
"MESSAGE_REL_OBJ_DEL", //NOI18N
beanName, fieldName));
rel.setDeleteAction(RelationshipElement.CASCADE_ACTION);
}
}
private SchemaElement setDatabaseRoot(MappingClassElement foo,
String schemaElementValue, boolean strict)
throws ModelException, DBException, ConversionException {
SchemaElement bar = null;
if (null != classLoader) {
if (loadedSchema.get(schemaElementValue) == null) {
SchemaElement.removeFromCache(schemaElementValue);
loadedSchema.put(schemaElementValue, schemaElementValue);
}
bar = SchemaElement.forName(schemaElementValue,classLoader);
}
else
bar = SchemaElement.forName(schemaElementValue);
if (strict) {
if (bar == null) {
// Prepare for a schema related error
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_CANNOT_FIND_SCHEMA", //NOI18N
new Object [] {schemaElementValue, classLoader}));
}
}
else {
if (null == bar) {
// conjure up a schema element and set its name...
// need to create a dummy for invalid mappings because the
// mapping model setter methods don't accept strings even
// though that is what they store.
bar = new SchemaElement();
DBIdentifier n = DBIdentifier.create(schemaElementValue);
n.setFullName(schemaElementValue);
bar.setName(n);
}
}
foo.setDatabaseRoot(bar);
return bar;
}
private String getTableName(String columnName, String defaultName) {
String retVal = defaultName;
int len = columnName.lastIndexOf('.');
if (len > 0)
retVal = columnName.substring(0,len);
return retVal;
}
private String getColumnName(String columnName) {
String retVal = columnName;
int len = columnName.lastIndexOf('.');
if (len > 0)
retVal = columnName.substring(len+1);
return retVal;
}
/** Map the secondary tables of the bean.
* @param mapping The schema2beans object that represents the mapping
* for a particular bean.
* @param mce Mapping class element
* @param schema dbschema information for all beans
* @param knownTables A Map which contains primary and secondary tables
* for beans in the set. Keys: table names Values: TableElement objects
* @param tablesOfBean contains primary table and
* secondary tables of the bean corresponding to the <code>mapping
* @throws ModelException
* @throws DBException
* @throws ConversionException
*/
private void mapSecondaryTables(EntityMapping mapping,
MappingClassElement mce,
SchemaElement schema,
Map knownTables,
List tablesOfBean)
throws ModelException, DBException, ConversionException {
SecondaryTable [] tableList = mapping.getSecondaryTable();
List tl = mce.getTables();
if (null != tl && tl.size() > 0 && null != tl.get(0)) {
MappingTableElement primary = (MappingTableElement) tl.get(0);
for (int i = 0; null != tableList && i < tableList.length; i++) {
String tn = tableList[i].getTableName();
if (StringHelper.isEmpty(tn))
continue;
TableElement te = getTableElement(schema,
DBIdentifier.create(tn.trim()), helper);
ColumnPair pairs[] = tableList[i].getColumnPair();
int len = 0;
if (null != pairs)
len = pairs.length;
if (0 == len) {
if (logger.isLoggable(Logger.WARNING))
logger.warning(
I18NHelper.getMessage(
messages,
"WARN_NO_PAIRS", //NOI18N
new Object [] {mce, tn}));
continue;
}
MappingReferenceKeyElement mrke = mce.addSecondaryTable(
primary,te);
for (int j = 0; null != pairs && j < pairs.length; j++) {
ColumnPairElement cpe = new ColumnPairElement();
DBIdentifier dbId = DBIdentifier.create("SecondaryTable"+j); //NOI18N
cpe.setName(dbId);
ColumnPair pair = pairs[j];
for (int k = 0; k < 2; k++) {
String nameOne = pair.getColumnName(k);
String sourceTableName = getTableName(
nameOne.trim(),
primary.getName().toString());
String sourceColumnName = getColumnName(nameOne);
dbId = DBIdentifier.create(sourceTableName);
TableElement sourceTableEl = getTableElement(schema,
dbId, helper);
dbId = DBIdentifier.create(sourceColumnName);
ColumnElement ce = getColumnElement(sourceTableEl,
dbId, helper);
if (k == 0)
cpe.setLocalColumn(ce);
else
cpe.setReferencedColumn(ce);
}
mrke.addColumnPair(cpe);
}
knownTables.put(tn,te);
tablesOfBean.add(tn);
}
}
else
throw new ConversionException(
I18NHelper.getMessage(
messages,
"WARN_NOT_MAPPED_TO_PRIMARY", //NOI18N
mce.getName()));
}
private boolean validateField(MappingClassElement mce, String beanName,
String fieldName, boolean throwEx) throws ConversionException {
MappingFieldElement mfe = mce.getField(fieldName);
if (null != mfe) {
if (throwEx)
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_FIELD_MAPPED_TWICE", //NOI18N
beanName, fieldName));
else
return false;
}
if (!helper.hasField(beanName,fieldName)) {
if (throwEx)
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_INVALID_FIELD", //NOI18N
beanName, fieldName));
else
return false;
}
return true;
}
// loop through the mappings to create a hash from bean name to em objects
private Map getBean2EntityMappingMap(SunCmpMapping beanSet) {
Map retVal = new HashMap();
EntityMapping [] entityMappingsInSet = beanSet.getEntityMapping();
int len = 0;
if (null != entityMappingsInSet)
len = entityMappingsInSet.length;
for (int k = 0; k < len; k++) {
EntityMapping anEntityMapping = entityMappingsInSet[k];
String beanName = anEntityMapping.getEjbName();
beanName.trim().charAt(0);
retVal.put(beanName,anEntityMapping);
}
return retVal;
}
// for each cmr field in the mapping
// determine is the inverse is a generated field
// create the mapping data for this generated field
private boolean completeCmrMappings(SunCmpMapping beanSet)
throws ConversionException {
// loop through the mappings to create a hash from bean name to em objects
Map beanName2EntityMapping = getBean2EntityMappingMap(beanSet);
Iterator emIter = beanName2EntityMapping.values().iterator();
boolean retVal = false;
String errorMsg = I18NHelper.getMessage(
messages,
"ERR_BAD_CONVERSION_HELPER"); //NOI18N
while (emIter.hasNext()) {
EntityMapping anEM = (EntityMapping) emIter.next();
String beanName = anEM.getEjbName();
String pt = anEM.getTableName();
CmrFieldMapping[] cmrsInEM = anEM.getCmrFieldMapping();
int len = 0;
if (null != cmrsInEM && !StringHelper.isEmpty(beanName))
len = cmrsInEM.length;
for (int i = 0; i < len; i++) {
String fieldName = cmrsInEM[i].getCmrFieldName();
if (!helper.hasField(beanName, fieldName)) {
throw new ConversionException(I18NHelper.getMessage(
messages,
"WARN_INVALID_CMRFIELD", //NOI18N
beanName, fieldName));
}
fieldName.trim().charAt(0);
String otherField = helper.getInverseFieldName(beanName,
fieldName);
if (otherField == null) {
throw new ConversionException(errorMsg);
}
String otherBean = helper.getRelationshipFieldContent(beanName,
fieldName);
if (otherBean == null) {
throw new ConversionException(errorMsg);
}
if (helper.isGeneratedRelationship(otherBean,otherField)) {
retVal = true;
String otherBeanName = helper.getRelationshipFieldContent(
beanName, fieldName);
otherBeanName.trim().charAt(0);
EntityMapping otherEM =
(EntityMapping) beanName2EntityMapping.get(
otherBeanName);
CmrFieldMapping inverseMapping = new CmrFieldMapping();
inverseMapping.setCmrFieldName(otherField);
inverseMapping.setColumnPair(
reverseCPArray(cmrsInEM[i].getColumnPair(), pt,
beanName, fieldName));
otherEM.addCmrFieldMapping(inverseMapping);
}
}
}
return retVal;
}
private ColumnPair[] reverseCPArray(ColumnPair[] cpa, String primeTable,
String beanName, String fieldName)
throws ConversionException {
int len = (cpa == null) ? 0 : cpa.length;
if (len == 0) {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_COLUMN_PAIR_MISSING", //NOI18N
beanName, fieldName));
}
ColumnPair [] retVal = new ColumnPair[len];
for (int index = 0; index < len; index++) {
retVal[index] = new ColumnPair();
retVal[index].addColumnName(
qualify(primeTable,cpa[index].getColumnName(1)));
retVal[index].addColumnName(
qualify(primeTable,cpa[index].getColumnName(0)));
}
return retVal;
}
private String qualify(String tn, String cn) {
int tmp = cn.indexOf('.');
String retVal = cn;
if (-1 == tmp)
retVal = tn + "." + cn; // NOI18N
return retVal;
}
private TableElement getTableElement(SchemaElement schema,
DBIdentifier dbId, ConversionHelper helper)
throws DBException, ConversionException {
TableElement retVal = ((schema != null) ?
schema.getTable(dbId) : null);
if (null == retVal && !helper.ensureValidation()) {
// Need to create a dummy for invalid mappings because
// the mapping model setter methods don't accept
// strings even though that is what they store.
// Create the table and add it to the knownTables list
// for later
retVal = new TableElement();
retVal.setName(dbId);
retVal.setDeclaringSchema(schema);
org.netbeans.modules.dbschema.UniqueKeyElement tkey =
new org.netbeans.modules.dbschema.UniqueKeyElement();
ColumnElement fakeKeyCol = new ColumnElement();
fakeKeyCol.setName(DBIdentifier.create(retVal.getName().getName()+ "."+"fookeyng")); //NOI18N
// Type numeric=2
fakeKeyCol.setType(2);
fakeKeyCol.setPrecision(new Integer(MINIMUM_PRECISION));
tkey.setPrimaryKey(true);
tkey.addColumn(fakeKeyCol);
retVal.addColumn(fakeKeyCol);
retVal.addKey(tkey);
}
if (retVal == null) {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_INVALID_TABLE", //NOI18N
new Object [] {dbId.getName(), schema}));
}
return retVal;
}
private ColumnElement getColumnElement(TableElement sourceTableEl,
DBIdentifier sourceColumnName, ConversionHelper helper)
throws DBException, ConversionException {
ColumnElement aCol = sourceTableEl.getColumn(sourceColumnName);
if (null == aCol && !helper.ensureValidation()) {
aCol = new ColumnElement();
aCol.setName(DBIdentifier.create(sourceTableEl.getName().toString()+"."+sourceColumnName.toString())); // NOI18N
aCol.setDeclaringTable(sourceTableEl);
aCol.setNullable(true);
}
if (aCol == null) {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_INVALID_COLUMN", //NOI18N
new Object [] {sourceColumnName, sourceTableEl}));
}
return aCol;
}
private MappingFieldElement createUnmappedField(MappingClassElement mce,
String beanName, String fieldName)
throws ModelException {
PersistenceClassElement pce = ((MappingClassElementImpl)mce).
getPersistenceElement();
PersistenceFieldElementImpl pfei =
new PersistenceFieldElementImpl(fieldName);
PersistenceFieldElement pfe =
new PersistenceFieldElement(pfei, pce);
pfe.setKey(helper.isKey(beanName,fieldName,false));
pce.addField(pfe);
MappingFieldElement mfe = new MappingFieldElementImpl(fieldName, mce);
return mfe;
}
/**
* Set fetch group level for mapping field and mapping relationship
* element. If there is fetch level information, then set mapping field
* element with the level. If there is no fetch group level information,
* set mapping field element to GROUP_NONE if it is mapping relationship
* element or blob type field otherwise set to GROUP_DEFAULT.
* @param fw An object having fetch group level information
* @param mfe An mapping field or mapping relationship element to be set
* fetch group level
* @param fieldMappedToABlob boolean type to indicate that field is blob
* type or not
* @throws ModelException
* @throws ConversionException
*/
private void setFetchGroup(FetchedWith fw, MappingFieldElement mfe,
String beanName, boolean fieldMappedToABlob)
throws ModelException, ConversionException {
if (null != fw) {
boolean tryLevel = false;
int level = 0;
try {
level = fw.getLevel();
tryLevel = true;
}
catch (RuntimeException e) {
// If there is no level set, schema2beans throws
// RuntimeException.
// Need to do more investigation on why throws this exception.
// it is very likely that there is no level set, which would
// throw an exception here.. Which we are going to ignore
}
if (tryLevel) {
if (level < 1) {
throw new ConversionException(
I18NHelper.getMessage(
messages,
"ERR_INVALID_FG_LEVEL", //NOI18N
beanName, mfe.getName(), ""+level)); //NOI18N
}
mfe.setFetchGroup(level+1);
}
String ig = fw.getNamedGroup();
if (null != ig) {
Integer fgval = (Integer) namedGroups.get(ig);
if (null == fgval) {
fgval = new Integer(groupCount--);
namedGroups.put(ig,fgval);
}
mfe.setFetchGroup(fgval.intValue());
}
if (fw.isNone())
mfe.setFetchGroup(MappingFieldElement.GROUP_NONE);
if (fw.isDefault())
mfe.setFetchGroup(MappingFieldElement.GROUP_DEFAULT);
}
else {
if (mfe instanceof MappingRelationshipElement)
mfe.setFetchGroup(MappingFieldElement.GROUP_NONE);
else {
if (fieldMappedToABlob)
mfe.setFetchGroup(MappingFieldElement.GROUP_NONE);
else
mfe.setFetchGroup(MappingFieldElement.GROUP_DEFAULT);
}
}
}
private PersistenceFieldElement createPersistenceField(
MappingClassElement mce, String fieldName) throws ModelException {
PersistenceClassElement pce =
((MappingClassElementImpl)mce).getPersistenceElement();
PersistenceFieldElementImpl pfei =
new PersistenceFieldElementImpl(fieldName);
PersistenceFieldElement pfe =
new PersistenceFieldElement(pfei, pce);
pce.addField(pfe);
return pfe;
}
private MappingFieldElement createMappingField(MappingClassElement mce,
String fieldName, ColumnElement col) throws ModelException {
MappingFieldElement mfe =
new MappingFieldElementImpl(fieldName, mce);
mce.addField(mfe);
if (col != null)
mfe.addColumn(col);
return mfe;
}
}
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