/*******************************************************************************
* Copyright (c) 1998, 2008 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.platform.database;
import java.io.Writer;
import java.io.IOException;
import java.util.*;
import org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition;
import org.eclipse.persistence.exceptions.ValidationException;
import org.eclipse.persistence.queries.ValueReadQuery;
/**
* <p><b>Purpose</b>: Provides HSQL specific behavior.
*
* @since TOPLink/Java 4.5
*/
public class HSQLPlatform extends DatabasePlatform {
public HSQLPlatform() {
}
protected Hashtable buildFieldTypes() {
Hashtable fieldTypeMapping;
fieldTypeMapping = super.buildFieldTypes();
fieldTypeMapping.put(Boolean.class, new FieldTypeDefinition("TINYINT", false));
fieldTypeMapping.put(Integer.class, new FieldTypeDefinition("INTEGER", false));
fieldTypeMapping.put(Long.class, new FieldTypeDefinition("NUMERIC", 19));
fieldTypeMapping.put(Float.class, new FieldTypeDefinition("REAL", false));
fieldTypeMapping.put(Double.class, new FieldTypeDefinition("REAL", false));
fieldTypeMapping.put(Short.class, new FieldTypeDefinition("SMALLINT", false));
fieldTypeMapping.put(Byte.class, new FieldTypeDefinition("SMALLINT", false));
fieldTypeMapping.put(java.math.BigInteger.class, new FieldTypeDefinition("NUMERIC", 38));
fieldTypeMapping.put(java.math.BigDecimal.class, new FieldTypeDefinition("NUMERIC", 38).setLimits(38, -19, 19));
fieldTypeMapping.put(Number.class, new FieldTypeDefinition("NUMERIC", 38).setLimits(38, -19, 19));
fieldTypeMapping.put(Byte[].class, new FieldTypeDefinition("BINARY", false));
fieldTypeMapping.put(Character[].class, new FieldTypeDefinition("LONGVARCHAR", false));
fieldTypeMapping.put(byte[].class, new FieldTypeDefinition("BINARY", false));
fieldTypeMapping.put(char[].class, new FieldTypeDefinition("LONGVARCHAR", false));
fieldTypeMapping.put(java.sql.Blob.class, new FieldTypeDefinition("BINARY", false));
fieldTypeMapping.put(java.sql.Clob.class, new FieldTypeDefinition("LONGVARCHAR", false));
return fieldTypeMapping;
}
public boolean isHSQL() {
return true;
}
/**
* HSQL 1.6.1 does not support the ALTER TABLE method of create foreign key constraints
*/
public boolean supportsForeignKeyConstraints() {
return false;
}
public boolean supportsIdentity() {
return true;
}
public ValueReadQuery buildSelectQueryForIdentity() {
return new ValueReadQuery("CALL IDENTITY()");
}
public void printFieldIdentityClause(Writer writer) throws ValidationException {
try {
writer.write(" IDENTITY");
} catch (IOException ex) {
throw ValidationException.fileError(ex);
}
}
}