/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.translator.jdbc.h2;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
import org.teiid.language.LanguageObject;
import org.teiid.language.Like;
import org.teiid.language.Like.MatchMode;
import org.teiid.translator.ExecutionContext;
import org.teiid.translator.SourceSystemFunctions;
import org.teiid.translator.Translator;
import org.teiid.translator.TranslatorException;
import org.teiid.translator.TypeFacility;
import org.teiid.translator.jdbc.AliasModifier;
import org.teiid.translator.jdbc.ConvertModifier;
import org.teiid.translator.jdbc.FunctionModifier;
import org.teiid.translator.jdbc.JDBCExecutionFactory;
import org.teiid.translator.jdbc.ModFunctionModifier;
import org.teiid.translator.jdbc.SQLConversionVisitor;
import org.teiid.translator.jdbc.hsql.AddDiffModifier;
import org.teiid.translator.jdbc.oracle.ConcatFunctionModifier;
import org.teiid.translator.jdbc.postgresql.PostgreSQLExecutionFactory;
@Translator(name="h2", description="A translator for open source H2 Database")
public class H2ExecutionFactory extends JDBCExecutionFactory {
@Override
public void start() throws TranslatorException {
super.start();
registerFunctionModifier(SourceSystemFunctions.PARSETIMESTAMP, new AliasModifier("parsedatetime")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.FORMATTIMESTAMP, new AliasModifier("formatdatetime")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.DAYOFMONTH, new AliasModifier("day_of_month")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.DAYOFWEEK, new AliasModifier("day_of_week")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.WEEK, new AliasModifier("iso_week")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.DAYOFYEAR, new AliasModifier("day_of_year")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.UNESCAPE, new AliasModifier("stringdecode")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.MOD, new ModFunctionModifier(SourceSystemFunctions.MOD, getLanguageFactory()));
//TODO: this behavior is configurable in h2 starting with 1.1.119
registerFunctionModifier(SourceSystemFunctions.CONCAT, new ConcatFunctionModifier(getLanguageFactory()));
registerFunctionModifier(SourceSystemFunctions.TIMESTAMPADD, new AddDiffModifier(true, getLanguageFactory()));
registerFunctionModifier(SourceSystemFunctions.TIMESTAMPDIFF, new AddDiffModifier(false, getLanguageFactory()));
ConvertModifier convert = new ConvertModifier();
convert.addTypeMapping("boolean", FunctionModifier.BOOLEAN); //$NON-NLS-1$
convert.addTypeMapping("tinyint", FunctionModifier.BYTE); //$NON-NLS-1$
convert.addTypeMapping("smallint", FunctionModifier.SHORT); //$NON-NLS-1$
convert.addTypeMapping("int", FunctionModifier.INTEGER); //$NON-NLS-1$
convert.addTypeMapping("bigint", FunctionModifier.LONG); //$NON-NLS-1$
convert.addTypeMapping("real", FunctionModifier.FLOAT); //$NON-NLS-1$
convert.addTypeMapping("double", FunctionModifier.DOUBLE); //$NON-NLS-1$
convert.addTypeMapping("decimal", FunctionModifier.BIGDECIMAL); //$NON-NLS-1$
convert.addTypeMapping("decimal(38,0)", FunctionModifier.BIGINTEGER); //$NON-NLS-1$
convert.addTypeMapping("date", FunctionModifier.DATE); //$NON-NLS-1$
convert.addTypeMapping("time", FunctionModifier.TIME); //$NON-NLS-1$
convert.addTypeMapping("timestamp", FunctionModifier.TIMESTAMP); //$NON-NLS-1$
convert.addTypeMapping("char(1)", FunctionModifier.CHAR); //$NON-NLS-1$
convert.addTypeMapping("varchar", FunctionModifier.STRING); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.CONVERT, convert);
addPushDownFunction("h2", "timestampdiff", TypeFacility.RUNTIME_NAMES.INTEGER, TypeFacility.RUNTIME_NAMES.STRING, TypeFacility.RUNTIME_NAMES.TIMESTAMP, TypeFacility.RUNTIME_NAMES.TIMESTAMP); //$NON-NLS-1$ //$NON-NLS-2$
}
@Override
public String translateLiteralDate(Date dateValue) {
return "DATE '" + formatDateValue(dateValue) + "'"; //$NON-NLS-1$//$NON-NLS-2$
}
@Override
public String translateLiteralTime(Time timeValue) {
return "TIME '" + formatDateValue(timeValue) + "'"; //$NON-NLS-1$//$NON-NLS-2$
}
@Override
public String translateLiteralTimestamp(Timestamp timestampValue) {
return "TIMESTAMP '" + formatDateValue(timestampValue) + "'"; //$NON-NLS-1$//$NON-NLS-2$
}
@Override
public List<String> getSupportedFunctions() {
List<String> supportedFunctions = new ArrayList<String>();
supportedFunctions.addAll(super.getSupportedFunctions());
supportedFunctions.add(SourceSystemFunctions.ABS);
supportedFunctions.add(SourceSystemFunctions.ACOS);
supportedFunctions.add(SourceSystemFunctions.ASIN);
supportedFunctions.add(SourceSystemFunctions.ATAN);
supportedFunctions.add(SourceSystemFunctions.ATAN2);
supportedFunctions.add(SourceSystemFunctions.BITAND);
//supportedFunctions.add(SourceSystemFunctions.BITNOT);
supportedFunctions.add(SourceSystemFunctions.BITOR);
supportedFunctions.add(SourceSystemFunctions.BITXOR);
supportedFunctions.add(SourceSystemFunctions.CEILING);
supportedFunctions.add(SourceSystemFunctions.COS);
supportedFunctions.add(SourceSystemFunctions.COT);
supportedFunctions.add(SourceSystemFunctions.DEGREES);
supportedFunctions.add(SourceSystemFunctions.EXP);
supportedFunctions.add(SourceSystemFunctions.FLOOR);
supportedFunctions.add(SourceSystemFunctions.LOG);
supportedFunctions.add(SourceSystemFunctions.LOG10);
supportedFunctions.add(SourceSystemFunctions.MOD);
supportedFunctions.add(SourceSystemFunctions.PI);
supportedFunctions.add(SourceSystemFunctions.POWER);
supportedFunctions.add(SourceSystemFunctions.RADIANS);
supportedFunctions.add(SourceSystemFunctions.ROUND);
supportedFunctions.add(SourceSystemFunctions.SIGN);
supportedFunctions.add(SourceSystemFunctions.SIN);
supportedFunctions.add(SourceSystemFunctions.SQRT);
supportedFunctions.add(SourceSystemFunctions.TAN);
supportedFunctions.add(SourceSystemFunctions.ASCII);
supportedFunctions.add(SourceSystemFunctions.CHAR);
supportedFunctions.add(SourceSystemFunctions.CONCAT);
supportedFunctions.add(SourceSystemFunctions.INSERT);
supportedFunctions.add(SourceSystemFunctions.LCASE);
supportedFunctions.add(SourceSystemFunctions.LEFT);
supportedFunctions.add(SourceSystemFunctions.LENGTH);
supportedFunctions.add(SourceSystemFunctions.LOCATE);
supportedFunctions.add(SourceSystemFunctions.LPAD);
supportedFunctions.add(SourceSystemFunctions.LTRIM);
supportedFunctions.add(SourceSystemFunctions.REPEAT);
supportedFunctions.add(SourceSystemFunctions.REPLACE);
supportedFunctions.add(SourceSystemFunctions.RIGHT);
supportedFunctions.add(SourceSystemFunctions.RPAD);
supportedFunctions.add(SourceSystemFunctions.RTRIM);
supportedFunctions.add(SourceSystemFunctions.SUBSTRING);
supportedFunctions.add(SourceSystemFunctions.TRIM);
supportedFunctions.add(SourceSystemFunctions.UCASE);
supportedFunctions.add(SourceSystemFunctions.UNESCAPE);
supportedFunctions.add(SourceSystemFunctions.DAYNAME);
supportedFunctions.add(SourceSystemFunctions.DAYOFMONTH);
supportedFunctions.add(SourceSystemFunctions.DAYOFWEEK);
supportedFunctions.add(SourceSystemFunctions.DAYOFYEAR);
supportedFunctions.add(SourceSystemFunctions.FORMATTIMESTAMP);
supportedFunctions.add(SourceSystemFunctions.HOUR);
supportedFunctions.add(SourceSystemFunctions.MINUTE);
supportedFunctions.add(SourceSystemFunctions.MONTH);
supportedFunctions.add(SourceSystemFunctions.MONTHNAME);
supportedFunctions.add(SourceSystemFunctions.PARSETIMESTAMP);
supportedFunctions.add(SourceSystemFunctions.QUARTER);
supportedFunctions.add(SourceSystemFunctions.SECOND);
supportedFunctions.add(SourceSystemFunctions.TIMESTAMPADD);
//h2 rounds up
//supportedFunctions.add(SourceSystemFunctions.TIMESTAMPDIFF);
//supportedFunctions.add(SourceSystemFunctions.TIMESTAMPCREATE);
supportedFunctions.add(SourceSystemFunctions.WEEK);
supportedFunctions.add(SourceSystemFunctions.YEAR);
supportedFunctions.add(SourceSystemFunctions.CONVERT);
supportedFunctions.add(SourceSystemFunctions.IFNULL);
supportedFunctions.add(SourceSystemFunctions.COALESCE);
supportedFunctions.add(SourceSystemFunctions.ARRAY_GET);
supportedFunctions.add(SourceSystemFunctions.ARRAY_LENGTH);
return supportedFunctions;
}
@Override
public boolean supportsInlineViews() {
return true;
}
@Override
public boolean supportsRowLimit() {
return true;
}
@Override
public boolean supportsRowOffset() {
return true;
}
@Override
public boolean supportsExcept() {
return true;
}
@Override
public boolean supportsIntersect() {
return true;
}
@Override
public boolean supportsAggregatesEnhancedNumeric() {
return true;
}
@Override
public boolean supportsLikeRegex() {
return true;
}
@Override
public String getLikeRegexString() {
return "REGEXP"; //$NON-NLS-1$
}
@Override
public boolean supportsArrayType() {
return true;
}
@Override
public boolean supportsInsertWithQueryExpression() {
return true;
}
@Override
public List<?> translate(LanguageObject obj, ExecutionContext context) {
if (obj instanceof Like) {
Like like = (Like)obj;
if (like.getEscapeCharacter() == null && like.getMode() != MatchMode.REGEX) {
return PostgreSQLExecutionFactory.addDefaultEscape(like);
}
}
return super.translate(obj, context);
}
@Override
public boolean supportsSelectWithoutFrom() {
return true;
}
@Override
public String getHibernateDialectClassName() {
return "org.hibernate.dialect.H2Dialect"; //$NON-NLS-1$
}
@Override
public boolean tempTableRequiresTransaction() {
return true;
}
@Override
public boolean useParensForJoins() {
return true;
}
@Override
public SQLConversionVisitor getSQLConversionVisitor() {
return new SQLConversionVisitor(this) {
/**
* low level override so that only the right hand side nested join
* is put in parens
*/
@Override
protected boolean useParensForLHSJoins() {
return false;
}
@Override
protected String getUpsertKeyword() {
return "MERGE"; //$NON-NLS-1$
}
};
}
@Override
public boolean supportsUpsert() {
return true;
}
}