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HSQLDB example source code file (TransferDb.java)

This example HSQLDB source code file (TransferDb.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - HSQLDB tags/keywords

createindex, dataaccesspointexception, dataaccesspointexception, dropindex, importedkeys, jdbc, primarykeysconstraint, resultset, sql, sqlexception, sqlexception, string, string, table, util, vector, vector

The HSQLDB TransferDb.java source code

/* Copyright (c) 2001-2008, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


package org.hsqldb.util;

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Types;
import java.util.Vector;

// fredt@users 20020215 - patch 516309 by Nicolas Bazin - enhancements
// sqlbob@users 20020401 - patch 1.7.0 - reengineering
// nicolas BAZIN 20020430 - add support of Catalog and mckoi db helper
// Stephan Frind 20040508 - speed improvements

/**
 * Conversions between different databases
 *
 * @version 1.7.0
 */
class TransferDb extends DataAccessPoint {

    Connection          conn;
    DatabaseMetaData    meta;
    protected Statement srcStatement = null;

    TransferDb(Connection c, Traceable t) throws DataAccessPointException {

        super(t);

        conn = c;

        if (c != null) {
            String productLowerName;

            try {
                meta              = c.getMetaData();
                databaseToConvert = c.getCatalog();
                productLowerName  = meta.getDatabaseProductName();

                if (productLowerName == null) {
                    productLowerName = "";
                } else {
                    productLowerName = productLowerName.toLowerCase();
                }

                helper = HelperFactory.getHelper(productLowerName);

                helper.set(this, t, meta.getIdentifierQuoteString());
            } catch (SQLException e) {
                throw new DataAccessPointException(e.getMessage());
            }
        }
    }

    boolean isConnected() {
        return (conn != null);
    }

    boolean getAutoCommit() throws DataAccessPointException {

        boolean result = false;

        try {
            result = conn.getAutoCommit();
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }

        return result;
    }

    void commit() throws DataAccessPointException {

        if (srcStatement != null) {
            try {
                srcStatement.close();
            } catch (SQLException e) {}

            srcStatement = null;
        }

        try {
            conn.commit();
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }
    }

    void rollback() throws DataAccessPointException {

        if (srcStatement != null) {
            try {
                srcStatement.close();
            } catch (SQLException e) {}

            srcStatement = null;
        }

        try {
            conn.rollback();
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }
    }

    void setAutoCommit(boolean flag) throws DataAccessPointException {

        try {
            conn.setAutoCommit(flag);
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }
    }

    boolean execute(String statement) throws DataAccessPointException {

        boolean   result = false;
        Statement stmt   = null;

        try {
            stmt   = conn.createStatement();
            result = stmt.execute(statement);
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        } finally {
            if (stmt != null) {
                try {
                    stmt.close();
                } catch (SQLException e) {}
            }
        }

        return result;
    }

    TransferResultSet getData(String statement)
    throws DataAccessPointException {

        ResultSet rsData = null;

        try {
            if (srcStatement != null) {
                srcStatement.close();
            }

            srcStatement = conn.createStatement();
            rsData       = srcStatement.executeQuery(statement);
        } catch (SQLException e) {
            try {
                srcStatement.close();
            } catch (Exception e1) {}

            srcStatement = null;
            rsData       = null;

            throw new DataAccessPointException(e.getMessage());
        }

        return new TransferResultSet(rsData);
    }

    void putData(String statement, TransferResultSet r,
                 int iMaxRows) throws DataAccessPointException {

        if ((statement == null) || statement.equals("") || (r == null)) {
            return;
        }

        PreparedStatement destPrep = null;

        try {
            destPrep = conn.prepareStatement(statement);

            int   i = 0;
            int   tmpLength;
            int   len      = r.getColumnCount();
            int[] tmpTypes = null;

            while (r.next()) {
                if (tmpTypes == null) {
                    tmpTypes = new int[len + 1];

                    for (int j = 1; j <= len; j++) {
                        tmpTypes[j] = r.getColumnType(j);
                    }
                }

                transferRow(r, destPrep, len, tmpTypes);

                if (iMaxRows != 0 && i == iMaxRows) {
                    break;
                }

                i++;

                if (iMaxRows != 0 || i % 100 == 0) {
                    tracer.trace("Transfered " + i + " rows");
                }
            }
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        } finally {
            if (destPrep != null) {
                try {
                    destPrep.close();
                } catch (SQLException e) {}
            }
        }
    }

/*
    private void transferRow(TransferResultSet r,
                             PreparedStatement p)
                             throws DataAccessPointException, SQLException {
        // TODO
        // what is this never used variable for?
        // looks like missing debug flags because constructing these strings consumes a lot
        // of time
        String sLast = "";

        if (p != null) {
            p.clearParameters();
        }

        int len = r.getColumnCount();

        for (int i = 0; i < len; i++) {
            int t = r.getColumnType(i + 1);

            sLast = "column=" + r.getColumnName(i + 1) + " datatype="
                    + (String) helper.getSupportedTypes().get(new Integer(t));

            Object o = r.getObject(i + 1);

            if (o == null) {
                if (p != null) {
                    p.setNull(i + 1, t);
                }

                sLast += " value=<null>";
            } else {
                o = helper.convertColumnValue(o, i + 1, t);

                p.setObject(i + 1, o);

                sLast += " value=\'" + o.toString() + "\'";
            }
        }

        if (p != null) {
            p.execute();
        }

        sLast = "";
    }
*/
    Vector getSchemas() throws DataAccessPointException {

        Vector    ret    = new Vector();
        ResultSet result = null;

        try {
            result = meta.getSchemas();
        } catch (SQLException e) {
            result = null;
        }

        try {
            if (result != null) {
                while (result.next()) {
                    ret.addElement(result.getString(1));
                }

                result.close();
            }
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }

        return (ret);
    }

    Vector getCatalog() throws DataAccessPointException {

        Vector    ret    = new Vector();
        ResultSet result = null;

        if (databaseToConvert != null && databaseToConvert.length() > 0) {
            ret.addElement(databaseToConvert);

            return (ret);
        }

        try {
            result = meta.getCatalogs();
        } catch (SQLException e) {
            result = null;
        }

        try {
            if (result != null) {
                while (result.next()) {
                    ret.addElement(result.getString(1));
                }

                result.close();
            }
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }

        return (ret);
    }

    void setCatalog(String sCatalog) throws DataAccessPointException {

        if (sCatalog != null && sCatalog.length() > 0) {
            try {
                conn.setCatalog(sCatalog);
            } catch (SQLException e) {
                throw new DataAccessPointException(e.getMessage());
            }
        }
    }

    Vector getTables(String sCatalog,
                     String[] sSchemas) throws DataAccessPointException {

        Vector    tTable = new Vector();
        ResultSet result = null;

        tracer.trace("Reading source tables");

        int nbloops = 1;

        if (sSchemas != null) {
            nbloops = sSchemas.length;
        }

        try {

// variations return null or emtpy result sets with informix JDBC driver 2.2
            for (int SchemaIdx = 0; SchemaIdx < nbloops; SchemaIdx++) {
                if (sSchemas != null && sSchemas[SchemaIdx] != null) {
                    result = meta.getTables(sCatalog, sSchemas[SchemaIdx],
                                            null, null);
                } else {
                    try {
                        result = meta.getTables(sCatalog, "", null, null);
                    } catch (SQLException e) {
                        result = meta.getTables(sCatalog, null, null, null);
                    }
                }

                while (result.next()) {
                    String name   = result.getString(3);
                    String type   = result.getString(4);
                    String schema = "";

                    if (sSchemas != null && sSchemas[SchemaIdx] != null) {
                        schema = sSchemas[SchemaIdx];
                    }

                    /*
                    ** we ignore the following table types:
                    **    "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL TEMPORARY"
                    **    "ALIAS", "SYNONYM"
                    */
                    if ((type.compareTo("TABLE") == 0)
                            || (type.compareTo("VIEW") == 0)) {
                        TransferTable t = new TransferTable(this, name,
                                                            schema, type,
                                                            tracer);

                        tTable.addElement(t);
                    } else {
                        tracer.trace("Found table of type :" + type
                                     + " - this type is ignored");
                    }
                }
            }
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        } finally {
            if (result != null) {
                try {
                    result.close();
                } catch (SQLException e) {}
            }
        }

        return (tTable);
    }

    void getTableStructure(TransferTable TTable,
                           DataAccessPoint Dest)
                           throws DataAccessPointException {

        String create = "CREATE " + TTable.Stmts.sType + " "
                        + Dest.helper.formatName(TTable.Stmts.sDestTable);
        String    insert         = "";
        ResultSet ImportedKeys   = null;
        boolean   importedkeys   = false;
        String    alterCreate    = new String("");
        String    alterDrop      = new String("");
        String    ConstraintName = new String("");
        String    RefTableName   = new String("");
        String    foreignKeyName = new String("");
        String    columnName     = new String("");

        Dest.helper.setSchema(TTable.Stmts.sSchema);

        TTable.Stmts.sDestDrop =
            "DROP " + TTable.Stmts.sType + " "
            + Dest.helper.formatName(TTable.Stmts.sDestTable) + ";";

        if (TTable.Stmts.sType.compareTo("TABLE") == 0) {
            TTable.Stmts.sDestDelete =
                "DELETE FROM "
                + Dest.helper.formatName(TTable.Stmts.sDestTable) + ";";
            create += "(";
        } else if (TTable.Stmts.sType.compareTo("VIEW") == 0) {
            TTable.Stmts.bDelete     = false;
            TTable.Stmts.sDestDelete = "";
            create                   += " AS SELECT ";
        }

        if (TTable.Stmts.sType.compareTo("TABLE") == 0) {
            insert = "INSERT INTO "
                     + Dest.helper.formatName(TTable.Stmts.sDestTable)
                     + " VALUES(";
        } else if (TTable.Stmts.sType.compareTo("VIEW") == 0) {
            TTable.Stmts.bInsert = false;
            insert               = "";
        }

        if (TTable.Stmts.sType.compareTo("VIEW") == 0) {
            /*
            ** Don't know how to retrieve the underlying select so we leave here.
            ** The user will have to edit the rest of the create statement.
            */
            TTable.Stmts.bTransfer    = false;
            TTable.Stmts.bCreate      = true;
            TTable.Stmts.bDelete      = false;
            TTable.Stmts.bDrop        = true;
            TTable.Stmts.bCreateIndex = false;
            TTable.Stmts.bDropIndex   = false;
            TTable.Stmts.bInsert      = false;
            TTable.Stmts.bAlter       = false;

            return;
        }

        ImportedKeys = null;

        try {
            ImportedKeys =
                meta.getImportedKeys(TTable.Stmts.sDatabaseToConvert,
                                     TTable.Stmts.sSchema,
                                     TTable.Stmts.sSourceTable);
        } catch (SQLException e) {
            ImportedKeys = null;
        }

        try {
            if (ImportedKeys != null) {
                while (ImportedKeys.next()) {
                    importedkeys = true;

                    if (!ImportedKeys.getString(12).equals(ConstraintName)) {
                        if (!ConstraintName.equals("")) {
                            alterCreate +=
                                Dest.helper
                                    .formatIdentifier(columnName
                                        .substring(0, columnName
                                            .length() - 1)) + ") REFERENCES "
                                                            + Dest.helper
                                                                .formatName(RefTableName);

                            if (foreignKeyName.length() > 0) {
                                alterCreate +=
                                    " ("
                                    + Dest.helper.formatIdentifier(
                                        foreignKeyName.substring(
                                            0, foreignKeyName.length()
                                            - 1)) + ")";
                            }

                            alterCreate += ";";
                            alterDrop =
                                alterDrop.substring(0, alterDrop.length() - 1)
                                + ";";
                            foreignKeyName = "";
                            columnName     = "";
                        }

                        RefTableName   = ImportedKeys.getString(3);
                        ConstraintName = ImportedKeys.getString(12);
                        alterCreate +=
                            "ALTER TABLE "
                            + Dest.helper.formatName(TTable.Stmts.sDestTable)
                            + " ADD CONSTRAINT ";

                        if ((TTable.Stmts.bFKForced)
                                && (!ConstraintName.startsWith("FK_"))) {
                            alterCreate +=
                                Dest.helper.formatIdentifier(
                                    "FK_" + ConstraintName) + " ";
                        } else {
                            alterCreate +=
                                Dest.helper.formatIdentifier(ConstraintName)
                                + " ";
                        }

                        alterCreate += "FOREIGN KEY (";
                        alterDrop +=
                            "ALTER TABLE "
                            + Dest.helper.formatName(TTable.Stmts.sDestTable)
                            + " DROP CONSTRAINT ";

                        if ((TTable.Stmts.bFKForced)
                                && (!ConstraintName.startsWith("FK_"))) {
                            alterDrop +=
                                Dest.helper.formatIdentifier(
                                    "FK_" + ConstraintName) + " ";
                        } else {
                            alterDrop +=
                                Dest.helper.formatIdentifier(ConstraintName)
                                + " ";
                        }
                    }

                    columnName     += ImportedKeys.getString(8) + ",";
                    foreignKeyName += ImportedKeys.getString(4) + ",";
                }

                ImportedKeys.close();
            }

            if (importedkeys) {
                alterCreate += columnName.substring(0, columnName.length() - 1)
                               + ") REFERENCES "
                               + Dest.helper.formatName(RefTableName);

                if (foreignKeyName.length() > 0) {
                    alterCreate +=
                        " ("
                        + Dest.helper.formatIdentifier(
                            foreignKeyName.substring(
                                0, foreignKeyName.length() - 1)) + ")";
                }

                alterCreate += ";";
                alterDrop = alterDrop.substring(0, alterDrop.length() - 1)
                            + ";";
                TTable.Stmts.sDestDrop = alterDrop + TTable.Stmts.sDestDrop;
            }
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }

        boolean   primarykeys           = false;
        String    PrimaryKeysConstraint = "";
        ResultSet PrimaryKeys           = null;

        try {
            PrimaryKeys = meta.getPrimaryKeys(TTable.Stmts.sDatabaseToConvert,
                                              TTable.Stmts.sSchema,
                                              TTable.Stmts.sSourceTable);
        } catch (SQLException e) {
            PrimaryKeys = null;
        }

        try {
            if (PrimaryKeys != null) {
                while (PrimaryKeys.next()) {
                    if (primarykeys) {
                        PrimaryKeysConstraint += ", ";
                    } else {
                        if (PrimaryKeys.getString(6) != null) {
                            PrimaryKeysConstraint =
                                " CONSTRAINT "
                                + Dest.helper.formatIdentifier(
                                    PrimaryKeys.getString(6));
                        }

                        PrimaryKeysConstraint += " PRIMARY KEY (";
                    }

                    PrimaryKeysConstraint +=
                        Dest.helper.formatIdentifier(PrimaryKeys.getString(4));
                    primarykeys = true;
                }

                PrimaryKeys.close();

                if (primarykeys) {
                    PrimaryKeysConstraint += ") ";
                }
            }
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }

        boolean   indices     = false;
        ResultSet Indices     = null;
        String    IndiceName  = new String("");
        String    CreateIndex = new String("");
        String    DropIndex   = new String("");

        try {
            Indices = meta.getIndexInfo(TTable.Stmts.sDatabaseToConvert,
                                        TTable.Stmts.sSchema,
                                        TTable.Stmts.sSourceTable, false,
                                        false);
        } catch (SQLException e) {
            Indices = null;
        }

        try {
            if (Indices != null) {
                while (Indices.next()) {
                    String tmpIndexName = null;

                    try {
                        tmpIndexName = Indices.getString(6);
                    } catch (SQLException e) {
                        tmpIndexName = null;
                    }

                    if (tmpIndexName == null) {
                        continue;
                    }

                    if (!tmpIndexName.equals(IndiceName)) {
                        if (!IndiceName.equals("")) {
                            CreateIndex =
                                CreateIndex.substring(
                                    0, CreateIndex.length() - 1) + ");";
                            DropIndex += ";";
                        }

                        IndiceName = tmpIndexName;
                        DropIndex  += "DROP INDEX ";

                        if ((TTable.Stmts.bIdxForced)
                                && (!IndiceName.startsWith("Idx_"))) {
                            DropIndex += Dest.helper.formatIdentifier("Idx_"
                                    + IndiceName);
                        } else {
                            DropIndex +=
                                Dest.helper.formatIdentifier(IndiceName);
                        }

                        CreateIndex += "CREATE ";

                        if (!Indices.getBoolean(4)) {
                            CreateIndex += "UNIQUE ";
                        }

                        CreateIndex += "INDEX ";

                        if ((TTable.Stmts.bIdxForced)
                                && (!IndiceName.startsWith("Idx_"))) {
                            CreateIndex += Dest.helper.formatIdentifier("Idx_"
                                    + IndiceName);
                        } else {
                            CreateIndex +=
                                Dest.helper.formatIdentifier(IndiceName);
                        }

                        CreateIndex +=
                            " ON "
                            + Dest.helper.formatName(TTable.Stmts.sDestTable)
                            + "(";
                    }

                    CreateIndex +=
                        Dest.helper.formatIdentifier(Indices.getString(9))
                        + ",";
                    indices = true;
                }

                Indices.close();

                if (indices) {
                    CreateIndex =
                        CreateIndex.substring(0, CreateIndex.length() - 1)
                        + ");";
                    DropIndex += ";";
                }
            }
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }

        Vector v = new Vector();

        tracer.trace("Reading source columns for table "
                     + TTable.Stmts.sSourceTable);

        ResultSet         col            = null;
        int               colnum         = 1;
        Statement         stmt           = null;
        ResultSet         select_rs      = null;
        ResultSetMetaData select_rsmdata = null;

        try {
            stmt           = conn.createStatement();
            select_rs      = stmt.executeQuery(TTable.Stmts.sSourceSelect);
            select_rsmdata = select_rs.getMetaData();
            col = meta.getColumns(TTable.Stmts.sDatabaseToConvert,
                                  TTable.Stmts.sSchema,
                                  TTable.Stmts.sSourceTable, null);
        } catch (SQLException eSchema) {

            // fredt - second try with null schema
            if (TTable.Stmts.sSchema.equals("")) {
                try {
                    col = meta.getColumns(TTable.Stmts.sDatabaseToConvert,
                                          null, TTable.Stmts.sSourceTable,
                                          null);
                } catch (SQLException eSchema1) {}
            }
        }

        try {
            while (col.next()) {
                String name = Dest.helper.formatIdentifier(col.getString(4));
                int    type        = col.getShort(5);
                String source      = col.getString(6);
                int    column_size = col.getInt(7);
                String DefaultVal  = col.getString(13);
                boolean rsmdata_NoNulls =
                    (select_rsmdata.isNullable(colnum)
                     == java.sql.DatabaseMetaData.columnNoNulls);
                boolean rsmdata_isAutoIncrement = false;

                try {
                    rsmdata_isAutoIncrement =
                        select_rsmdata.isAutoIncrement(colnum);
                } catch (SQLException e) {
                    rsmdata_isAutoIncrement = false;
                }

                int rsmdata_precision = select_rsmdata.getPrecision(colnum);
                int rsmdata_scale     = select_rsmdata.getScale(colnum);

                type = helper.convertFromType(type);
                type = Dest.helper.convertToType(type);

                Integer inttype  = new Integer(type);
                String  datatype = (String) TTable.hTypes.get(inttype);

                if (datatype == null) {
                    datatype = source;

                    tracer.trace("No mapping for type: " + name + " type: "
                                 + type + " source: " + source);
                }

                if (type == Types.NUMERIC || type == Types.DECIMAL) {
                    datatype += "(" + Integer.toString(rsmdata_precision);

                    if (rsmdata_scale > 0) {
                        datatype += "," + Integer.toString(rsmdata_scale);
                    }

                    datatype += ")";
                } else if (type == Types.CHAR || type == Types.VARCHAR || type == Types.BINARY || type == Types.VARBINARY) {
                    datatype += "(" + Integer.toString(column_size) + ")";
                } else if (rsmdata_isAutoIncrement) {
                    datatype = "SERIAL";
                }

                if (DefaultVal != null) {
                    if (type == Types.CHAR || type == Types.VARCHAR
                            || type == Types.LONGVARCHAR
                            || type == Types.BINARY || type == Types.DATE
                            || type == Types.TIME || type == Types.TIMESTAMP) {
                        if (!DefaultVal.startsWith("'")) {
                            DefaultVal = "\'" + DefaultVal + "\'";
                        }
                    }

                    datatype += " DEFAULT " + DefaultVal;
                }

                if (rsmdata_NoNulls) {
                    datatype += " NOT NULL ";
                }

                v.addElement(inttype);

                datatype = helper.fixupColumnDefRead(TTable, select_rsmdata,
                                                     datatype, col, colnum);
                datatype = Dest.helper.fixupColumnDefWrite(TTable,
                        select_rsmdata, datatype, col, colnum);
                create += name + " " + datatype + ",";
                insert += "?,";

                colnum++;
            }

            select_rs.close();
            stmt.close();
            col.close();
        } catch (SQLException e) {
            throw new DataAccessPointException(e.getMessage());
        }

        if (primarykeys) {
            create += PrimaryKeysConstraint + ",";
        }

        TTable.Stmts.sDestCreate = create.substring(0, create.length() - 1)
                                   + ")";
        TTable.Stmts.sDestInsert = insert.substring(0, insert.length() - 1)
                                   + ")";

        if (importedkeys) {
            TTable.Stmts.bAlter     = true;
            TTable.Stmts.sDestAlter = alterCreate;
        } else {
            TTable.Stmts.bAlter = false;
        }

        if (indices) {
            TTable.Stmts.bCreateIndex     = true;
            TTable.Stmts.bDropIndex       = true;
            TTable.Stmts.sDestCreateIndex = CreateIndex;
            TTable.Stmts.sDestDropIndex   = DropIndex;
        } else {
            TTable.Stmts.bCreateIndex = false;
            TTable.Stmts.bDropIndex   = false;
        }

        //iColumnType = new int[v.size()];
        //for (int j = 0; j < v.size(); j++) {
        //    iColumnType[j] = ((Integer) v.elementAt(j)).intValue();
        //}
    }

    void close() throws DataAccessPointException {

        if (srcStatement != null) {
            try {
                srcStatement.close();
            } catch (SQLException e) {}

            srcStatement = null;
        }

        if (conn != null) {
            try {
                conn.close();
            } catch (SQLException e) {}

            conn = null;
        }
    }

    /**
     * Method declaration
     *
     *
     * @param type
     * @param r
     * @param p
     *
     * @throws SQLException
     */
    private void transferRow(TransferResultSet r, PreparedStatement p,
                             int len,
                             int[] types)
                             throws DataAccessPointException, SQLException {

        for (int i = 1; i <= len; i++) {
            int    t = types[i];
            Object o = r.getObject(i);

            if (o == null) {
                if (p != null) {
                    p.setNull(i, t);
                }
            } else {
                o = helper.convertColumnValue(o, i, t);

                p.setObject(i, o);
            }
        }

        if (p != null) {
            p.execute();
        }
    }

    /**
     * @return Returns the meta.
     */
    public DatabaseMetaData getMeta() {
        return meta;
    }

    /**
     * @return Returns the conn.
     */
    public Connection getConn() {
        return conn;
    }
}

Other HSQLDB examples (source code examples)

Here is a short list of links related to this HSQLDB TransferDb.java source code file:

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