提交 1e0db2e8 authored 作者: Thomas Mueller's avatar Thomas Mueller

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上级 2dea109a
package com.caucho.jdbc;
import com.caucho.util.Log;
import javax.sql.DataSource;
import java.util.logging.Logger;
/**
* Metadata for the H2 database.
* For details, see
* http://wondering.ru/java/H2ejb3onResinSupport1.0.zip
*/
public class H2MetaData extends JdbcMetaData {
private static final Logger log = Log.open(H2MetaData.class);
protected H2MetaData(DataSource ds) {
super(ds);
}
/**
* Returns the blob type.
*/
public String getBlobType(){
return "BLOB";
}
/**
* Returns the long type.
*/
public String getLongType() {
return "BIGINT";
}
/**
* Returns true if identity is supported.
*/
public boolean supportsIdentity() {
return true;
}
/**
* Returns the identity property
*/
public String createIdentitySQL(String sqlType) {
return "IDENTITY";
}
}
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License"). You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* glassfish/bootstrap/legal/CDDLv1.0.txt or
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* HEADER in each file and include the License file at
* glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
* add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your
* own identifying information: Portions Copyright [yyyy]
* [name of copyright owner]
*/
// Copyright (c) 1998, 2006, Oracle. All rights reserved.
package oracle.toplink.essentials.platform.database;
import java.util.*;
import java.io.*;
import java.sql.*;
import oracle.toplink.essentials.exceptions.*;
import oracle.toplink.essentials.queryframework.*;
import oracle.toplink.essentials.internal.helper.*;
import oracle.toplink.essentials.expressions.*;
import oracle.toplink.essentials.internal.expressions.*;
import oracle.toplink.essentials.internal.databaseaccess.*;
import oracle.toplink.essentials.internal.sessions.AbstractSession;
/**
* <p><b>Purpose</b>: Provides H2 specific behaviour.
*/
public class H2Platform extends DatabasePlatform {
public H2Platform() {
}
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));
fieldTypeMapping.put(java.sql.Date.class, new FieldTypeDefinition("DATE", false));
fieldTypeMapping.put(java.sql.Time.class, new FieldTypeDefinition("TIME", false));
fieldTypeMapping.put(java.sql.Timestamp.class, new FieldTypeDefinition("TIMESTAMP", false));
return fieldTypeMapping;
}
// public boolean isHSQL() {
// return true;
// }
public boolean isH2() {
return true;
}
public boolean supportsForeignKeyConstraints() {
return true;
}
public ValueReadQuery buildSelectQueryForNativeSequence(String seqName, Integer size) {
return new ValueReadQuery("CALL NEXT VALUE FOR " + getQualifiedSequenceName(seqName));
// return new ValueReadQuery("SELECT " + getQualifiedSequenceName(seqName) + ".NEXTVAL FROM DUAL");
}
public boolean supportsNativeSequenceNumbers() {
return true;
}
protected String getQualifiedSequenceName(String seqName) {
if (getTableQualifier().equals("")) {
return seqName;
} else {
return getTableQualifier() + "." + seqName;
}
}
public boolean supportsSelectForUpdateNoWait() {
return true;
}
protected ExpressionOperator todayOperator() {
return ExpressionOperator.simpleFunctionNoParentheses(ExpressionOperator.Today, "SYSDATE");
}
protected void initializePlatformOperators() {
super.initializePlatformOperators();
addOperator(ExpressionOperator.simpleMath(ExpressionOperator.Concat, "||"));
}
public boolean shouldUseJDBCOuterJoinSyntax() {
return false;
}
}
package org.apache.openjpa.jdbc.sql;
import java.math.BigDecimal;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Arrays;
import java.util.Locale;
import org.apache.commons.lang.StringUtils;
import org.apache.openjpa.jdbc.kernel.exps.FilterValue;
import org.apache.openjpa.jdbc.schema.Column;
import org.apache.openjpa.jdbc.schema.PrimaryKey;
import org.apache.openjpa.jdbc.schema.Table;
import org.apache.openjpa.jdbc.schema.Unique;
import org.apache.openjpa.meta.JavaTypes;
public class H2Dictionary extends DBDictionary {
public H2Dictionary() {
platform = "H2";
validationSQL = "CALL 1";
closePoolSQL = "SHUTDOWN";
supportsAutoAssign = true;
lastGeneratedKeyQuery = "CALL IDENTITY()";
autoAssignClause = "IDENTITY";
autoAssignTypeName = "INTEGER";
nextSequenceQuery = "CALL NEXT VALUE FOR {0}";
// CROSS JOIN is currently not supported
crossJoinClause = "JOIN";
requiresConditionForCrossJoin = true;
stringLengthFunction = "LENGTH({0})";
trimLeadingFunction = "LTRIM({0})";
trimTrailingFunction = "RTRIM({0})";
trimBothFunction = "TRIM({0})";
useSchemaName = true;
supportsSelectForUpdate = true;
supportsSelectStartIndex = true;
supportsSelectEndIndex = true;
rangePosition = RANGE_POST_LOCK;
supportsDeferredConstraints = false;
useGetObjectForBlobs = true;
blobTypeName = "BLOB";
doubleTypeName = "DOUBLE";
supportsNullTableForGetPrimaryKeys = true;
supportsNullTableForGetIndexInfo = true;
requiresCastForMathFunctions = false;
requiresCastForComparisons = false;
reservedWordSet.addAll(Arrays.asList(new String[] { "CURRENT_TIMESTAMP", "CURRENT_TIME", "CURRENT_DATE", "CROSS", "DISTINCT", "EXCEPT", "EXISTS", "FROM", "FOR", "FALSE",
"FULL", "GROUP", "HAVING", "INNER", "INTERSECT", "IS", "JOIN", "LIKE", "MINUS", "NATURAL", "NOT", "NULL", "ON", "ORDER", "PRIMARY", "ROWNUM", "SELECT", "SYSDATE",
"SYSTIME", "SYSTIMESTAMP", "TODAY", "TRUE", "UNION", "WHERE" }));
}
public int getJDBCType(int metaTypeCode, boolean lob) {
int type = super.getJDBCType(metaTypeCode, lob);
switch (type) {
case Types.BIGINT:
if (metaTypeCode == JavaTypes.BIGINTEGER)
return Types.NUMERIC;
break;
}
return type;
}
public int getPreferredType(int type) {
return super.getPreferredType(type);
}
public String[] getAddPrimaryKeySQL(PrimaryKey pk) {
return new String[0];
}
public String[] getDropPrimaryKeySQL(PrimaryKey pk) {
return new String[0];
}
public String[] getAddColumnSQL(Column column) {
return new String[] { "ALTER TABLE " + getFullName(column.getTable(), false) + " ADD COLUMN " + getDeclareColumnSQL(column, true) };
}
public String[] getCreateTableSQL(Table table) {
StringBuffer buf = new StringBuffer();
buf.append("CREATE TABLE ").append(getFullName(table, false)).append(" (");
Column[] cols = table.getColumns();
for (int i = 0; i < cols.length; i++) {
if (i > 0)
buf.append(", ");
buf.append(getDeclareColumnSQL(cols[i], false));
}
PrimaryKey pk = table.getPrimaryKey();
String pkStr;
if (pk != null) {
pkStr = getPrimaryKeyConstraintSQL(pk);
if (!StringUtils.isEmpty(pkStr))
buf.append(", ").append(pkStr);
}
Unique[] unqs = table.getUniques();
String unqStr;
for (int i = 0; i < unqs.length; i++) {
unqStr = getUniqueConstraintSQL(unqs[i]);
if (unqStr != null)
buf.append(", ").append(unqStr);
}
buf.append(")");
return new String[] { buf.toString() };
}
protected String getPrimaryKeyConstraintSQL(PrimaryKey pk) {
Column[] cols = pk.getColumns();
if (cols.length == 1 && cols[0].isAutoAssigned())
return null;
return super.getPrimaryKeyConstraintSQL(pk);
}
public boolean isSystemIndex(String name, Table table) {
return name.toUpperCase(Locale.ENGLISH).startsWith("SYSTEM_");
}
protected String getSequencesSQL(String schemaName, String sequenceName) {
StringBuffer buf = new StringBuffer();
buf.append("SELECT SEQUENCE_SCHEMA, SEQUENCE_NAME FROM ").append("INFORMATION_SCHEMA.SEQUENCES");
if (schemaName != null || sequenceName != null)
buf.append(" WHERE ");
if (schemaName != null) {
buf.append("SEQUENCE_SCHEMA = ?");
if (sequenceName != null)
buf.append(" AND ");
}
if (sequenceName != null)
buf.append("SEQUENCE_NAME = ?");
return buf.toString();
}
protected SQLBuffer toOperation(String op, SQLBuffer selects, SQLBuffer from, SQLBuffer where, SQLBuffer group, SQLBuffer having, SQLBuffer order, boolean distinct,
boolean forUpdate, long start, long end) {
return super.toOperation(op, selects, from, where, group, having, order, distinct, forUpdate, start, end);
}
public Column[] getColumns(DatabaseMetaData meta, String catalog, String schemaName, String tableName, String columnName, Connection conn) throws SQLException {
Column[] cols = super.getColumns(meta, catalog, schemaName, tableName, columnName, conn);
return cols;
}
public void setDouble(PreparedStatement stmnt, int idx, double val, Column col) throws SQLException {
super.setDouble(stmnt, idx, val, col);
}
public void setBigDecimal(PreparedStatement stmnt, int idx, BigDecimal val, Column col) throws SQLException {
super.setBigDecimal(stmnt, idx, val, col);
}
protected void appendSelectRange(SQLBuffer buf, long start, long end) {
if (end != Long.MAX_VALUE)
buf.append(" LIMIT ").appendValue(end - start);
if (start != 0)
buf.append(" OFFSET ").appendValue(start);
}
public void substring(SQLBuffer buf, FilterValue str, FilterValue start, FilterValue end) {
buf.append("SUBSTR(");
str.appendTo(buf);
buf.append(", (");
start.appendTo(buf);
buf.append(" + 1)");
if (end != null) {
buf.append(", (");
end.appendTo(buf);
buf.append(" - ");
start.appendTo(buf);
buf.append(")");
}
buf.append(")");
}
public void indexOf(SQLBuffer buf, FilterValue str, FilterValue find, FilterValue start) {
buf.append("(POSITION(");
find.appendTo(buf);
buf.append(" IN ");
if (start != null)
substring(buf, str, start, null);
else
str.appendTo(buf);
buf.append(") - 1");
if (start != null) {
buf.append(" + ");
start.appendTo(buf);
}
buf.append(")");
}
}
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