/*
* 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.db2;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.teiid.language.Expression;
import org.teiid.language.Function;
import org.teiid.language.Literal;
import org.teiid.translator.SourceSystemFunctions;
import org.teiid.translator.Translator;
import org.teiid.translator.TranslatorException;
import org.teiid.translator.TranslatorProperty;
import org.teiid.translator.TypeFacility;
import org.teiid.translator.jdbc.AliasModifier;
import org.teiid.translator.jdbc.FunctionModifier;
import org.teiid.util.Version;
@Translator(name="db2", description="A translator for IBM DB2 Database")
public class DB2ExecutionFactory extends BaseDB2ExecutionFactory {
public static final Version EIGHT_0 = Version.getVersion("8.0"); //$NON-NLS-1$
public static final Version NINE_1 = Version.getVersion("9.1"); //$NON-NLS-1$
public static final Version NINE_5 = Version.getVersion("9.5"); //$NON-NLS-1$
public static final Version FIVE_4 = Version.getVersion("5.4"); //$NON-NLS-1$
public static final Version SIX_1 = Version.getVersion("6.1"); //$NON-NLS-1$
private static final String WEEK_ISO = "WEEK_ISO";
private boolean dB2ForI;
private boolean supportsCommonTableExpressions = true;
public DB2ExecutionFactory() {
}
@Override
public List<String> getSupportedFunctions() {
List<String> supportedFunctions = new ArrayList<String>();
supportedFunctions.addAll(super.getSupportedFunctions());
supportedFunctions.add("ABS"); //$NON-NLS-1$
supportedFunctions.add("ACOS"); //$NON-NLS-1$
supportedFunctions.add("ASIN"); //$NON-NLS-1$
supportedFunctions.add("ATAN"); //$NON-NLS-1$
supportedFunctions.add("ATAN2"); //$NON-NLS-1$
supportedFunctions.add("CEILING"); //$NON-NLS-1$
supportedFunctions.add("COS"); //$NON-NLS-1$
supportedFunctions.add("COT"); //$NON-NLS-1$
supportedFunctions.add("DEGREES"); //$NON-NLS-1$
supportedFunctions.add("EXP"); //$NON-NLS-1$
supportedFunctions.add("FLOOR"); //$NON-NLS-1$
supportedFunctions.add("LOG"); //$NON-NLS-1$
supportedFunctions.add("LOG10"); //$NON-NLS-1$
supportedFunctions.add("MOD"); //$NON-NLS-1$
supportedFunctions.add("POWER"); //$NON-NLS-1$
supportedFunctions.add("RADIANS"); //$NON-NLS-1$
supportedFunctions.add("SIGN"); //$NON-NLS-1$
supportedFunctions.add("SIN"); //$NON-NLS-1$
supportedFunctions.add("SQRT"); //$NON-NLS-1$
supportedFunctions.add("TAN"); //$NON-NLS-1$
//supportedFunctions.add("ASCII"); //$NON-NLS-1$
supportedFunctions.add("CHAR"); //$NON-NLS-1$
supportedFunctions.add("CHR"); //$NON-NLS-1$
supportedFunctions.add("CONCAT"); //$NON-NLS-1$
supportedFunctions.add("||"); //$NON-NLS-1$
//supportedFunctions.add("INITCAP"); //$NON-NLS-1$
supportedFunctions.add("LCASE"); //$NON-NLS-1$
supportedFunctions.add("LENGTH"); //$NON-NLS-1$
supportedFunctions.add("LEFT"); //$NON-NLS-1$
supportedFunctions.add("LOCATE"); //$NON-NLS-1$
supportedFunctions.add("LOWER"); //$NON-NLS-1$
//supportedFunctions.add("LPAD"); //$NON-NLS-1$
supportedFunctions.add("LTRIM"); //$NON-NLS-1$
supportedFunctions.add("RAND"); //$NON-NLS-1$
supportedFunctions.add("REPLACE"); //$NON-NLS-1$
//supportedFunctions.add("RPAD"); //$NON-NLS-1$
supportedFunctions.add("RIGHT"); //$NON-NLS-1$
supportedFunctions.add("RTRIM"); //$NON-NLS-1$
supportedFunctions.add("SUBSTRING"); //$NON-NLS-1$
supportedFunctions.add(SourceSystemFunctions.TRIM);
//supportedFunctions.add("TRANSLATE"); //$NON-NLS-1$
supportedFunctions.add("UCASE"); //$NON-NLS-1$
supportedFunctions.add("UPPER"); //$NON-NLS-1$
supportedFunctions.add("HOUR"); //$NON-NLS-1$
supportedFunctions.add("MONTH"); //$NON-NLS-1$
supportedFunctions.add("MONTHNAME"); //$NON-NLS-1$
supportedFunctions.add("YEAR"); //$NON-NLS-1$
supportedFunctions.add("DAY"); //$NON-NLS-1$
supportedFunctions.add("DAYNAME"); //$NON-NLS-1$
supportedFunctions.add("DAYOFMONTH"); //$NON-NLS-1$
supportedFunctions.add("DAYOFWEEK"); //$NON-NLS-1$
supportedFunctions.add("DAYOFYEAR"); //$NON-NLS-1$
supportedFunctions.add("QUARTER"); //$NON-NLS-1$
supportedFunctions.add("MINUTE"); //$NON-NLS-1$
supportedFunctions.add("SECOND"); //$NON-NLS-1$
supportedFunctions.add("QUARTER"); //$NON-NLS-1$
supportedFunctions.add("WEEK"); //$NON-NLS-1$
supportedFunctions.add("CAST"); //$NON-NLS-1$
supportedFunctions.add("CONVERT"); //$NON-NLS-1$
supportedFunctions.add("IFNULL"); //$NON-NLS-1$
supportedFunctions.add("NVL"); //$NON-NLS-1$
supportedFunctions.add("COALESCE"); //$NON-NLS-1$
if (getVersion().compareTo(isdB2ForI()?SIX_1:NINE_5) >= 0) {
supportedFunctions.add(SourceSystemFunctions.ROUND);
}
return supportedFunctions;
}
@Override
public boolean supportsFunctionsInGroupBy() {
return !dB2ForI;
}
@Override
public boolean supportsAggregatesEnhancedNumeric() {
return true;
}
public void setSupportsCommonTableExpressions(boolean supportsCommonTableExpressions) {
this.supportsCommonTableExpressions = supportsCommonTableExpressions;
}
@TranslatorProperty(display="Supports Common Table Expressions", description="Supports Common Table Expressions",advanced=true)
@Override
public boolean supportsCommonTableExpressions() {
return supportsCommonTableExpressions;
}
@Override
public boolean supportsRowLimit() {
return true;
}
@Override
public boolean supportsElementaryOlapOperations() {
return getVersion().compareTo(isdB2ForI()?SIX_1:NINE_1) >= 0;
}
@Override
public void start() throws TranslatorException {
super.start();
registerFunctionModifier(SourceSystemFunctions.TRIM, new FunctionModifier() {
@Override
public List<?> translate(Function function) {
List<Expression> p = function.getParameters();
return Arrays.asList("STRIP(", p.get(2), ", ", ((Literal)p.get(0)).getValue(), ", ", p.get(1), ")"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
}
});
registerFunctionModifier(SourceSystemFunctions.WEEK, new AliasModifier(WEEK_ISO));
addPushDownFunction("db2", "substr", "string", TypeFacility.RUNTIME_NAMES.STRING, TypeFacility.RUNTIME_NAMES.INTEGER, TypeFacility.RUNTIME_NAMES.INTEGER); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
@TranslatorProperty(display="Is DB2 for i", description="If the server is DB2 for i (formally known as DB2/AS).",advanced=true)
public boolean isdB2ForI() {
return dB2ForI;
}
public void setdB2ForI(boolean dB2ForI) {
this.dB2ForI = dB2ForI;
}
@Override
protected boolean usesDatabaseVersion() {
return true;
}
@Override
public String getHibernateDialectClassName() {
return "org.hibernate.dialect.DB2Dialect"; //$NON-NLS-1$
}
@Override
public String getTemporaryTableName(String prefix) {
return "session." + super.getTemporaryTableName(prefix); //$NON-NLS-1$
}
@Override
public boolean supportsGroupByRollup() {
return true;
}
@Override
protected boolean supportsBooleanExpressions() {
return false;
}
}