org.eclipse.persistence.platform.database.DBasePlatform Maven / Gradle / Ivy
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/*
* Copyright (c) 1998, 2019 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019 IBM Corporation. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.platform.database;
import java.io.*;
import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.*;
import org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition;
import org.eclipse.persistence.internal.sessions.AbstractSession;
/**
* Purpose: Provides DBase specific behavior.
*
Responsibilities:
* - Writing Time {@literal &} Timestamp as strings since they are not supported.
*
*
* @since TOPLink/Java 1.0
*/
public class DBasePlatform extends org.eclipse.persistence.platform.database.DatabasePlatform {
protected Hashtable buildFieldTypes() {
Hashtable fieldTypeMapping;
fieldTypeMapping = new Hashtable();
fieldTypeMapping.put(Boolean.class, new FieldTypeDefinition("NUMBER", 1));
fieldTypeMapping.put(Integer.class, new FieldTypeDefinition("NUMBER", 11));
fieldTypeMapping.put(Long.class, new FieldTypeDefinition("NUMBER", 19));
fieldTypeMapping.put(Float.class, new FieldTypeDefinition("NUMBER", 12, 5).setLimits(19, 0, 19));
fieldTypeMapping.put(Double.class, new FieldTypeDefinition("NUMBER", 10, 5).setLimits(19, 0, 19));
fieldTypeMapping.put(Short.class, new FieldTypeDefinition("NUMBER", 6));
fieldTypeMapping.put(Byte.class, new FieldTypeDefinition("NUMBER", 4));
fieldTypeMapping.put(java.math.BigInteger.class, new FieldTypeDefinition("NUMBER", 19));
fieldTypeMapping.put(java.math.BigDecimal.class, new FieldTypeDefinition("NUMBER", 19).setLimits(19, 0, 9));
fieldTypeMapping.put(Number.class, new FieldTypeDefinition("NUMBER", 19).setLimits(19, 0, 9));
fieldTypeMapping.put(String.class, new FieldTypeDefinition("CHAR", DEFAULT_VARCHAR_SIZE));
fieldTypeMapping.put(Character.class, new FieldTypeDefinition("CHAR", 1));
fieldTypeMapping.put(Byte[].class, new FieldTypeDefinition("BINARY"));
fieldTypeMapping.put(Character[].class, new FieldTypeDefinition("MEMO"));
fieldTypeMapping.put(byte[].class, new FieldTypeDefinition("BINARY"));
fieldTypeMapping.put(char[].class, new FieldTypeDefinition("MEMO"));
fieldTypeMapping.put(java.sql.Blob.class, new FieldTypeDefinition("BINARY"));
fieldTypeMapping.put(java.sql.Clob.class, new FieldTypeDefinition("MEMO"));
fieldTypeMapping.put(java.sql.Date.class, new FieldTypeDefinition("DATE", false));
fieldTypeMapping.put(java.sql.Time.class, new FieldTypeDefinition("CHAR", 15));
fieldTypeMapping.put(java.sql.Timestamp.class, new FieldTypeDefinition("CHAR", 25));
return fieldTypeMapping;
}
/**
* INTERNAL
* We support more primitive than JDBC does so we must do conversion before printing or binding.
*/
public Object convertToDatabaseType(Object value) {
Object databaseValue = super.convertToDatabaseType(value);
if ((databaseValue instanceof java.sql.Time) || (databaseValue instanceof java.sql.Timestamp)) {
databaseValue = databaseValue.toString();
}
return databaseValue;
}
/**
* INTERNAL:
* DBase does not support Time/Timestamp so we must map to strings.
*/
public void setParameterValueInDatabaseCall(Object parameter,
PreparedStatement statement, int index, AbstractSession session) throws SQLException {
Object databaseValue = super.convertToDatabaseType(parameter);
if ((databaseValue instanceof java.sql.Time) || (databaseValue instanceof java.sql.Timestamp)) {
databaseValue = databaseValue.toString();
}
super.setParameterValueInDatabaseCall(databaseValue, statement, index, session);
}
/**
* INTERNAL:
* DBase does not support Time/Timestamp so we must map to strings.
*/
@Override
public void setParameterValueInDatabaseCall(Object parameter,
CallableStatement statement, String name, AbstractSession session) throws SQLException {
Object databaseValue = super.convertToDatabaseType(parameter);
if ((databaseValue instanceof java.sql.Time) || (databaseValue instanceof java.sql.Timestamp)) {
databaseValue = databaseValue.toString();
}
super.setParameterValueInDatabaseCall(databaseValue, statement, name, session);
}
/**
* INTERNAL:
* returns the maximum number of characters that can be used in a field
* name on this platform.
*/
public int getMaxFieldNameSize() {
return 10;
}
public String getSelectForUpdateString() {
return " FOR UPDATE OF *";
}
public boolean isDBase() {
return true;
}
/**
* Builds a table of minimum numeric values keyed on java class. This is used for type testing but
* might also be useful to end users attempting to sanitize values.
* NOTE: BigInteger {@literal &} BigDecimal minimums are dependent upon their precision {@literal &} Scale
*/
public Hashtable maximumNumericValues() {
Hashtable values = new Hashtable();
values.put(Integer.class, Integer.valueOf(Integer.MAX_VALUE));
values.put(Long.class, Long.valueOf("922337203685478000"));
values.put(Double.class, Double.valueOf("99999999.999999999"));
values.put(Short.class, Short.valueOf(Short.MIN_VALUE));
values.put(Byte.class, Byte.valueOf(Byte.MIN_VALUE));
values.put(Float.class, Float.valueOf("99999999.999999999"));
values.put(java.math.BigInteger.class, new java.math.BigInteger("922337203685478000"));
values.put(java.math.BigDecimal.class, new java.math.BigDecimal("999999.999999999"));
return values;
}
/**
* Builds a table of minimum numeric values keyed on java class. This is used for type testing but
* might also be useful to end users attempting to sanitize values.
*
NOTE: BigInteger {@literal &} BigDecimal minimums are dependent upon their precision {@literal &} Scale
*/
public Hashtable minimumNumericValues() {
Hashtable values = new Hashtable();
values.put(Integer.class, Integer.valueOf(Integer.MIN_VALUE));
values.put(Long.class, Long.valueOf("-922337203685478000"));
values.put(Double.class, Double.valueOf("-99999999.999999999"));
values.put(Short.class, Short.valueOf(Short.MIN_VALUE));
values.put(Byte.class, Byte.valueOf(Byte.MIN_VALUE));
values.put(Float.class, Float.valueOf("-99999999.999999999"));
values.put(java.math.BigInteger.class, new java.math.BigInteger("-922337203685478000"));
values.put(java.math.BigDecimal.class, new java.math.BigDecimal("-999999.999999999"));
return values;
}
/**
* Append the receiver's field 'NOT NULL' constraint clause to a writer.
*/
public void printFieldNotNullClause(Writer writer) {
// Do nothing
}
/**
* JDBC defines and outer join syntax, many drivers do not support this. So we normally avoid it.
*/
public boolean shouldUseJDBCOuterJoinSyntax() {
return false;
}
public boolean supportsForeignKeyConstraints() {
return false;
}
public boolean supportsPrimaryKeyConstraint() {
return false;
}
}