Glassfish example source code file (JDOMetaDataPropertyImpl.java)
The Glassfish JDOMetaDataPropertyImpl.java source code/*
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package com.sun.jdo.api.persistence.enhancer.meta;
import java.util.Map;
import java.util.List;
import java.util.Collection;
import java.util.HashSet;
import java.util.HashMap;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Properties;
import java.util.StringTokenizer;
import java.io.PrintWriter;
import com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataProperties.JDOClass;
import com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataProperties.JDOField;
import com.sun.jdo.api.persistence.enhancer.util.Support;
/**
* Provides the JDO meta information based on properties.
*/
//@olsen: new class
public class JDOMetaDataPropertyImpl extends Support
implements ExtendedJDOMetaData
{
// misc
// static final String nl = System.getProperty("line.separator", "\n");
// protected final PrintWriter out;
// model
private static final HashSet transientTypePrefixes = new HashSet();
private static final HashSet secondClassObjectTypes = new HashSet();
private static final HashSet mutableSecondClassObjectTypes = new HashSet();
/**
*
*/
private final JDOMetaDataProperties properties;
/**********************************************************************
*
*********************************************************************/
static
{
transientTypePrefixes.add("java/");//NOI18N
transientTypePrefixes.add("javax/");//NOI18N
transientTypePrefixes.add("com/sun/jdo/");//NOI18N
mutableSecondClassObjectTypes.add("java/util/Date");//NOI18N
mutableSecondClassObjectTypes.add("com/sun/jdo/spi/persistence/support/sqlstore/sco/Date");//NOI18N
mutableSecondClassObjectTypes.add("java/sql/Date");//NOI18N
mutableSecondClassObjectTypes.add("com/sun/jdo/spi/persistence/support/sqlstore/sco/SqlTime");//NOI18N
mutableSecondClassObjectTypes.add("java/sql/Time");//NOI18N
mutableSecondClassObjectTypes.add("com/sun/jdo/spi/persistence/support/sqlstore/sco/SqlDate");//NOI18N
mutableSecondClassObjectTypes.add("java/sql/Timestamp");//NOI18N
mutableSecondClassObjectTypes.add("com/sun/jdo/spi/persistence/support/sqlstore/sco/SqlTimestamp");//NOI18N
mutableSecondClassObjectTypes.add("java/util/Collection");//NOI18N
mutableSecondClassObjectTypes.add("java/util/Set");//NOI18N
mutableSecondClassObjectTypes.add("java/util/List");//NOI18N
mutableSecondClassObjectTypes.add("java/util/HashSet");//NOI18N
mutableSecondClassObjectTypes.add("java/util/Vector");//NOI18N
mutableSecondClassObjectTypes.add("java/util/ArrayList");//NOI18N
secondClassObjectTypes.add("java/lang/Boolean");//NOI18N
secondClassObjectTypes.add("java/lang/Byte");//NOI18N
secondClassObjectTypes.add("java/lang/Short");//NOI18N
secondClassObjectTypes.add("java/lang/Integer");//NOI18N
secondClassObjectTypes.add("java/lang/Long");//NOI18N
secondClassObjectTypes.add("java/lang/Float");//NOI18N
secondClassObjectTypes.add("java/lang/Double");//NOI18N
secondClassObjectTypes.add("java/lang/Number");//NOI18N
secondClassObjectTypes.add("java/lang/Character");//NOI18N
secondClassObjectTypes.add("java/lang/String");//NOI18N
secondClassObjectTypes.add("java/math/BigInteger");//NOI18N
secondClassObjectTypes.add("java/math/BigDecimal");//NOI18N
secondClassObjectTypes.addAll(mutableSecondClassObjectTypes);
} //JDOMetaDataPropertyImpl.<static>
/**
* Creates an instance.
* //@lars: out id not used anymore
*/
public JDOMetaDataPropertyImpl(Properties properties,
PrintWriter out)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
// check arguments
if (properties == null) {
final String msg
= "Initializing meta data: properties == null";//NOI18N
throw new JDOMetaDataFatalError(msg);
}
/*
if (out == null) {
final String msg
= "Initializing meta data: output stream == null";//NOI18N
throw new JDOMetaDataFatalError(msg);
}
*/
this.properties = new JDOMetaDataProperties (properties);
readProperties ();
//this.out = out;
}
/**
* Creates an instance.
* //@lars: out id not used anymore
*/
public JDOMetaDataPropertyImpl(Properties properties)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
this (properties, null);
}
/**
* Tests whether a class is known to be persistence-capable.
*/
public boolean isPersistenceCapableClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
//check the transient prefixes
for (Iterator i = transientTypePrefixes.iterator(); i.hasNext();) {
final String typePrefix = (String)i.next();
if (classPath.startsWith(typePrefix))
return false;
}
JDOClass clazz = getJDOClass (classPath);
return (clazz != null ? clazz.isPersistent () : false);
}
/**********************************************************************
*
*********************************************************************/
public boolean isTransientClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
return ! isPersistenceCapableClass (classPath);
}
/**
* Tests whether a class is known as a persistence-capable root class.
*/
public boolean isPersistenceCapableRootClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
//@lars
if ( ! isPersistenceCapableClass (classPath))
{
return false;
}
String superclass = getSuperClass (classPath);
return (superclass != null ? ! isPersistenceCapableClass (superclass) : true);
//^olsen: exchange dummy implementation
// return isPersistenceCapableClass(classPath);
}
/**
* Returns the name of the persistence-capable root class of a class.
*/
public String getPersistenceCapableRootClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
//^olsen: exchange dummy implementation
return (isPersistenceCapableClass(classPath) ? classPath : null);
}
/**
* Returns the superclass of a class.
*/
public final String getSuperClass (String classname)
{
JDOClass clazz = getJDOClass (classname);
return (clazz != null ? clazz.getSuperClassName () : null);
} //JDOMetaDataPropertyImpl.getSuperClass()
/**
* Tests whether a type is known for Second Class Objects.
*/
public boolean isSecondClassObjectType(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
return secondClassObjectTypes.contains(classPath);
}
/**
* Tests whether a type is known for Mutable Second Class Objects.
*/
public boolean isMutableSecondClassObjectType(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
return mutableSecondClassObjectTypes.contains(classPath);
}
/**
* Tests whether a field of a class is known to be persistent.
*/
public boolean isPersistentField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
JDOField field = getJDOField (classPath, fieldName);
return (field != null ? field.isPersistent () : false);
}
/**
* Tests whether a field of a class is known to be transactional.
*/
public boolean isTransactionalField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
JDOField field = getJDOField (classPath, fieldName);
return (field != null ? field.isTransactional () : false);
}
/**
* Tests whether a field of a class is known to be Primary Key.
*/
public boolean isPrimaryKeyField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
JDOField field = getJDOField (classPath, fieldName);
return (field != null ? field.isPk () : false);
}
/**
* Tests whether a field of a class is known to be part of the
* Default Fetch Group.
*/
public boolean isDefaultFetchGroupField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
JDOField field = getJDOField (classPath, fieldName);
return (field != null ? field.isInDefaultFetchGroup () : false);
}
/**
* Returns the unique field index of a declared, persistent field of a
* class.
*/
public int getFieldNo(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
JDOClass clazz = getJDOClass (classPath);
return (clazz != null ? clazz.getIndexOfField (fieldName) : -1);
}
/**
* Returns an array of field names of all declared, persistent fields
* of a class.
*/
public String [] getManagedFields (String classname)
{
JDOClass clazz = getJDOClass (classname);
return (clazz != null ? clazz.getManagedFieldNames () : new String [] {});
} //JDOMetaDataPropertyImpl.getManagedFields()
/**********************************************************************
* No interface method.
*********************************************************************/
public final String [] getKnownClasses ()
{
return this.properties.getKnownClassNames ();
} //JDOMetaDataPropertyImpl.getKnownClasses()
/**********************************************************************
* Gets all known fields of a class.
*********************************************************************/
public final String [] getKnownFields (String classname)
{
JDOClass clazz = getJDOClass (classname);
return (clazz != null ? clazz.getFields () : new String [] {});
} //JDOMetaDataPropertyImpl.getKnownFields()
/**********************************************************************
* Gets the access modifier of a class.
*********************************************************************/
public final int getClassModifiers (String classname)
{
JDOClass clazz = getJDOClass (classname);
return (clazz != null ? clazz.getModifiers () : 0);
} //JDOMetaDataPropertyImpl.getClassModifiers()
/**********************************************************************
* Gets the access modifier of a field.
*********************************************************************/
public final int getFieldModifiers (String classname,
String fieldname)
{
JDOField field = getJDOField (classname, fieldname);
return (field != null ? field.getModifiers () : 0);
} //JDOMetaDataPropertyImpl.getFieldModifiers()
/**********************************************************************
*
*********************************************************************/
public final String getFieldType (String classname,
String fieldname)
{
JDOField field = getJDOField (classname, fieldname);
return (field != null ? field.getType () : null);
} //JDOMetaDataPropertyImpl.getFieldType()
/**********************************************************************
*
*********************************************************************/
private final JDOClass getJDOClass (String classname)
throws JDOMetaDataUserException
{
return this.properties.getJDOClass (classname);
} //JDOMetaDataPropertyImpl.getJDOClass()
/**********************************************************************
*
*********************************************************************/
private final void readProperties ()
{
//read all classes
String [] classnames = this.properties.getKnownClassNames ();
for (int i = classnames.length - 1; i >= 0; i--)
{
JDOClass clazz = getJDOClass (classnames [i]); //should be always != null
//if the class is persistence it cannot be a second class object type
if (clazz.isPersistent () && secondClassObjectTypes.contains (clazz.getName ()))
{
throw new JDOMetaDataUserException ("ERROR: Parsing meta data properties: " +
"The persistent-capable class '" + clazz.getName () +
"' is second class object type.");
}
}
} //JDOMetaDataPropertyImpl.readProperties()
/**********************************************************************
*
*********************************************************************/
private final JDOField getJDOField (String classname,
String fieldname)
{
JDOClass clazz = getJDOClass (classname);
return (clazz != null ? clazz.getField (fieldname) : null);
} //JDOMetaDataPropertyImpl.getJDOField()
/**********************************************************************
*
*********************************************************************/
public String getKeyClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
final JDOClass clazz = getJDOClass(classPath);
return (clazz != null ? clazz.getOidClassName() : null);
}
/**********************************************************************
*
*********************************************************************/
public boolean isKeyField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
final JDOField field = getJDOField(classPath, fieldName);
return (field != null ? field.isPk() : false);
}
/**********************************************************************
*
*********************************************************************/
public boolean isKnownNonManagedField(String classPath,
String fieldName,
String fieldSig)
{
final JDOClass clazz = getJDOClass(classPath);
if (clazz == null) {
return true;
}
final JDOField field = clazz.getField(fieldName);
return (field != null ? field.isKnownTransient() : false);
}
/**********************************************************************
*
*********************************************************************/
public boolean isManagedField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
return (isPersistentField(classPath, fieldName)
|| isTransactionalField(classPath, fieldName));
}
/**********************************************************************
*
*********************************************************************/
public int getFieldFlags(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
if (!isManagedField(classPath, fieldName)) {
affirm(!isTransactionalField(classPath, fieldName));
affirm(!isPersistentField(classPath, fieldName));
affirm(!isKeyField(classPath, fieldName));
affirm(!isDefaultFetchGroupField(classPath, fieldName));
return 0;
}
//affirm(isManagedField(classPath, fieldName));
if (isTransactionalField(classPath, fieldName)) {
affirm(!isPersistentField(classPath, fieldName));
affirm(!isKeyField(classPath, fieldName));
// ignore any dfg membership of transactional fields
//affirm(!isDefaultFetchGroupField(classPath, fieldName));
return CHECK_WRITE;
}
//affirm(!isTransactionalField(classPath, fieldName));
affirm(isPersistentField(classPath, fieldName));
if (isKeyField(classPath, fieldName)) {
// ignore any dfg membership of key fields
//affirm(!isDefaultFetchGroupField(classPath, fieldName));
return MEDIATE_WRITE;
}
//affirm(!isKeyField(classPath, fieldName));
if (isDefaultFetchGroupField(classPath, fieldName)) {
return CHECK_READ | CHECK_WRITE;
}
//affirm(!isDefaultFetchGroupField(classPath, fieldName));
return MEDIATE_READ | MEDIATE_WRITE;
}
/**********************************************************************
*
*********************************************************************/
public int[] getFieldFlags(String classPath, String[] fieldNames)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
final int n = (fieldNames != null ? fieldNames.length : 0);
final int[] flags = new int[n];
for (int i = 0; i < n; i++) {
flags[i] = getFieldFlags(classPath, fieldNames[i]);
}
return flags;
}
/**********************************************************************
*
*********************************************************************/
public final String[] getFieldType(String classname,
String[] fieldnames)
{
final int n = (fieldnames != null ? fieldnames.length : 0);
final String[] types = new String[n];
for (int i = 0; i < n; i++) {
types[i] = getFieldType(classname, fieldnames[i]);
}
return types;
}
/**********************************************************************
*
*********************************************************************/
public int[] getFieldNo(String classPath, String[] fieldNames)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
final int n = (fieldNames != null ? fieldNames.length : 0);
final int[] flags = new int[n];
for (int i = 0; i < n; i++) {
flags[i] = getFieldNo(classPath, fieldNames[i]);
}
return flags;
}
/**********************************************************************
*
*********************************************************************/
public String[] getKeyFields(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
final List keys = new ArrayList();
final String[] fieldNames = getManagedFields(classPath);
final int n = fieldNames.length;
for (int i = 0; i < n; i++) {
if (isKeyField(classPath, fieldNames[i])) {
keys.add(fieldNames[i]);
}
}
return (String[])keys.toArray(new String[keys.size()]);
}
/**********************************************************************
*
*********************************************************************/
public String getPersistenceCapableSuperClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
for (String clazz = getSuperClass(classPath);
clazz != null;
clazz = getSuperClass(clazz)) {
if (isPersistenceCapableClass(clazz)) {
return clazz;
}
}
return null;
}
/**********************************************************************
*
*********************************************************************/
public String getSuperKeyClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
for (String superClass = getPersistenceCapableSuperClass(classPath);
superClass != null;
superClass = getPersistenceCapableSuperClass(superClass)) {
final String superKeyClass = getKeyClass(superClass);
if (superKeyClass != null) {
return superKeyClass;
}
}
return null;
}
/**********************************************************************
*
*********************************************************************/
/*
public static void main (String [] argv)
{
if (argv.length != 1)
{
System.err.println ("No property file specified.");
return;
}
Properties p = new Properties ();
try
{
java.io.InputStream in = new java.io.FileInputStream (new java.io.File (argv [0]));
p.load (in);
in.close ();
System.out.println ("PROPERTIES: " + p);
System.out.println ("############");
JDOMetaDataProperties props = new JDOMetaDataProperties (p);
}
catch (Throwable ex)
{
ex.printStackTrace (System.err);
}
JDOMetaDataPropertyImpl jdo = new JDOMetaDataPropertyImpl (p, new PrintWriter (System.out));
String [] classnames = jdo.getKnownClasses ();
for (int k = 0; k < classnames.length; k++)
{
String classname = classnames [k];
System.out.println ("CLASSNAME: " + classname);
System.out.println ("\tpersistent: " + jdo.isPersistenceCapableClass (classname));
System.out.println ("\tpersistent root: " + jdo.isPersistenceCapableRootClass (classname));
System.out.println ("\tpersistent root: " + jdo.getPersistenceCapableRootClass (classname));
String [] fieldnames = jdo.getKnownFields (classname);
for (int j = 0; j < fieldnames.length; j++)
{
String fieldname = (String) fieldnames [j];
System.out.println ("FIELDNAME: " + fieldname);
System.out.println ("\tpersistent field: " + jdo.isPersistentField (classname, fieldname));
System.out.println ("\tpk field: " + jdo.isPrimaryKeyField (classname, fieldname));
System.out.println ("\tdfg field: " + jdo.isDefaultFetchGroupField (classname, fieldname));
System.out.println ("\tnumber: " + jdo.getFieldNo (classname, fieldname));
String [] names = jdo.getManagedFields (classname);
final int n = (fieldnames != null ? names.length : 0);
System.out.println ("managed fields: number: " + n);
for (int i = 0; i < n; i++)
{
System.out.println (i + ": " + names [i] +
" number: " + jdo.getFieldNo (classname, names [i]) +
" pk: " + jdo.isPrimaryKeyField (classname, names [i]) +
" dfg: " + jdo.isDefaultFetchGroupField (classname, names [i]));
}
}
}
} //JDOMetaDataPropertyImpl.main
*/
} //JDOMetaDataPropertyImpl
//JDOMetaDataPropertyImpl
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