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Hibernate example source code file (SAPDBDialect.java)

This example Hibernate source code file (SAPDBDialect.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

casefragment, decodecasefragment, default_batch_size, dialect, jdbc, noargsqlfunction, sapdbdialect, sapdbdialect, sql, standardsqlfunction, standardsqlfunction, string, string, stringbuffer, stringbuffer, varargssqlfunction

The Hibernate SAPDBDialect.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program 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 distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.dialect;

import java.sql.Types;
import org.hibernate.cfg.Environment;
import org.hibernate.dialect.function.NoArgSQLFunction;
import org.hibernate.dialect.function.SQLFunctionTemplate;
import org.hibernate.dialect.function.StandardSQLFunction;
import org.hibernate.dialect.function.VarArgsSQLFunction;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.sql.CaseFragment;
import org.hibernate.sql.DecodeCaseFragment;
import org.hibernate.type.StandardBasicTypes;

/**
 * An SQL dialect compatible with SAP DB.
 * @author Brad Clow
 */
public class SAPDBDialect extends Dialect {

	public SAPDBDialect() {
		super();
		registerColumnType( Types.BIT, "boolean" );
		registerColumnType( Types.BIGINT, "fixed(19,0)" );
		registerColumnType( Types.SMALLINT, "smallint" );
		registerColumnType( Types.TINYINT, "fixed(3,0)" );
		registerColumnType( Types.INTEGER, "int" );
		registerColumnType( Types.CHAR, "char(1)" );
		registerColumnType( Types.VARCHAR, "varchar($l)" );
		registerColumnType( Types.FLOAT, "float" );
		registerColumnType( Types.DOUBLE, "double precision" );
		registerColumnType( Types.DATE, "date" );
		registerColumnType( Types.TIME, "time" );
		registerColumnType( Types.TIMESTAMP, "timestamp" );
		registerColumnType( Types.VARBINARY, "long byte" );
		registerColumnType( Types.NUMERIC, "fixed($p,$s)" );
		registerColumnType( Types.CLOB, "long varchar" );
		registerColumnType( Types.BLOB, "long byte" );

		registerFunction( "abs", new StandardSQLFunction("abs") );
		registerFunction( "sign", new StandardSQLFunction("sign", StandardBasicTypes.INTEGER) );

		registerFunction( "exp", new StandardSQLFunction("exp", StandardBasicTypes.DOUBLE) );
		registerFunction( "ln", new StandardSQLFunction("ln", StandardBasicTypes.DOUBLE) );
		registerFunction( "log", new StandardSQLFunction("ln", StandardBasicTypes.DOUBLE) );
		registerFunction( "pi", new NoArgSQLFunction("pi", StandardBasicTypes.DOUBLE) );
		registerFunction( "power", new StandardSQLFunction("power") );
		registerFunction( "acos", new StandardSQLFunction("acos", StandardBasicTypes.DOUBLE) );
		registerFunction( "asin", new StandardSQLFunction("asin", StandardBasicTypes.DOUBLE) );
		registerFunction( "atan", new StandardSQLFunction("atan", StandardBasicTypes.DOUBLE) );
		registerFunction( "cos", new StandardSQLFunction("cos", StandardBasicTypes.DOUBLE) );
		registerFunction( "cosh", new StandardSQLFunction("cosh", StandardBasicTypes.DOUBLE) );
		registerFunction( "cot", new StandardSQLFunction("cos", StandardBasicTypes.DOUBLE) );
		registerFunction( "sin", new StandardSQLFunction("sin", StandardBasicTypes.DOUBLE) );
		registerFunction( "sinh", new StandardSQLFunction("sinh", StandardBasicTypes.DOUBLE) );
		registerFunction( "tan", new StandardSQLFunction("tan", StandardBasicTypes.DOUBLE) );
		registerFunction( "tanh", new StandardSQLFunction("tanh", StandardBasicTypes.DOUBLE) );
		registerFunction( "radians", new StandardSQLFunction("radians", StandardBasicTypes.DOUBLE) );
		registerFunction( "degrees", new StandardSQLFunction("degrees", StandardBasicTypes.DOUBLE) );
		registerFunction( "atan2", new StandardSQLFunction("atan2", StandardBasicTypes.DOUBLE) );

		registerFunction( "round", new StandardSQLFunction("round") );
		registerFunction( "trunc", new StandardSQLFunction("trunc") );
		registerFunction( "ceil", new StandardSQLFunction("ceil") );
		registerFunction( "floor", new StandardSQLFunction("floor") );
		registerFunction( "greatest", new StandardSQLFunction("greatest") );
		registerFunction( "least", new StandardSQLFunction("least") );

		registerFunction("time", new StandardSQLFunction("time", StandardBasicTypes.TIME) );
		registerFunction("timestamp", new StandardSQLFunction("timestamp", StandardBasicTypes.TIMESTAMP) );
		registerFunction("date", new StandardSQLFunction("date", StandardBasicTypes.DATE) );
		registerFunction("microsecond", new StandardSQLFunction("microsecond", StandardBasicTypes.INTEGER) );

		registerFunction( "second", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "second(?1)") );
		registerFunction( "minute", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "minute(?1)") );
		registerFunction( "hour", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "hour(?1)") );
		registerFunction( "day", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "day(?1)") );
		registerFunction( "month", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "month(?1)") );
		registerFunction( "year", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "year(?1)") );

		registerFunction( "extract", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "?1(?3)") );

		registerFunction("dayname", new StandardSQLFunction("dayname", StandardBasicTypes.STRING) );
		registerFunction("monthname", new StandardSQLFunction("monthname", StandardBasicTypes.STRING) );
		registerFunction("dayofmonth", new StandardSQLFunction("dayofmonth", StandardBasicTypes.INTEGER) );
		registerFunction("dayofweek", new StandardSQLFunction("dayofweek", StandardBasicTypes.INTEGER) );
		registerFunction("dayofyear", new StandardSQLFunction("dayofyear", StandardBasicTypes.INTEGER) );
		registerFunction("weekofyear", new StandardSQLFunction("weekofyear", StandardBasicTypes.INTEGER) );

		registerFunction( "replace", new StandardSQLFunction("replace", StandardBasicTypes.STRING) );
		registerFunction( "translate", new StandardSQLFunction("translate", StandardBasicTypes.STRING) );
		registerFunction( "lpad", new StandardSQLFunction("lpad", StandardBasicTypes.STRING) );
		registerFunction( "rpad", new StandardSQLFunction("rpad", StandardBasicTypes.STRING) );
		registerFunction( "substr", new StandardSQLFunction("substr", StandardBasicTypes.STRING) );
		registerFunction( "initcap", new StandardSQLFunction("initcap", StandardBasicTypes.STRING) );
		registerFunction( "lower", new StandardSQLFunction("lower", StandardBasicTypes.STRING) );
		registerFunction( "ltrim", new StandardSQLFunction("ltrim", StandardBasicTypes.STRING) );
		registerFunction( "rtrim", new StandardSQLFunction("rtrim", StandardBasicTypes.STRING) );
		registerFunction( "lfill", new StandardSQLFunction("ltrim", StandardBasicTypes.STRING) );
		registerFunction( "rfill", new StandardSQLFunction("rtrim", StandardBasicTypes.STRING) );
		registerFunction( "soundex", new StandardSQLFunction("soundex", StandardBasicTypes.STRING) );
		registerFunction( "upper", new StandardSQLFunction("upper", StandardBasicTypes.STRING) );
		registerFunction( "ascii", new StandardSQLFunction("ascii", StandardBasicTypes.STRING) );
		registerFunction( "index", new StandardSQLFunction("index", StandardBasicTypes.INTEGER) );

		registerFunction( "value", new StandardSQLFunction( "value" ) );

		registerFunction( "concat", new VarArgsSQLFunction( StandardBasicTypes.STRING, "(", "||", ")" ) );
		registerFunction( "substring", new StandardSQLFunction( "substr", StandardBasicTypes.STRING ) );
		registerFunction( "locate", new StandardSQLFunction("index", StandardBasicTypes.INTEGER) );
		registerFunction( "coalesce", new StandardSQLFunction( "value" ) );

		getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE);

	}

	public boolean dropConstraints() {
		return false;
	}

	public String getAddColumnString() {
		return "add";
	}

	public String getAddForeignKeyConstraintString(
			String constraintName,
			String[] foreignKey,
			String referencedTable,
			String[] primaryKey, boolean referencesPrimaryKey
	) {
		StringBuffer res = new StringBuffer(30)
			.append(" foreign key ")
			.append(constraintName)
			.append(" (")
			.append( StringHelper.join( ", ", foreignKey ) )
			.append(") references ")
			.append(referencedTable);

		if(!referencesPrimaryKey) {
			res.append(" (")
			   .append( StringHelper.join(", ", primaryKey) )
			   .append(')');
		}

		return res.toString();
	}

	public String getAddPrimaryKeyConstraintString(String constraintName) {
		return " primary key ";
	}

	public String getNullColumnString() {
		return " null";
	}

	public String getSequenceNextValString(String sequenceName) {
		return "select " + getSelectSequenceNextValString( sequenceName ) + " from dual";
	}

	public String getSelectSequenceNextValString(String sequenceName) {
		return sequenceName + ".nextval";
	}

	public String getCreateSequenceString(String sequenceName) {
		return "create sequence " + sequenceName;
	}

	public String getDropSequenceString(String sequenceName) {
		return "drop sequence " + sequenceName;
	}

	public String getQuerySequencesString() {
		return "select sequence_name from domain.sequences";
	}

	public boolean supportsSequences() {
		return true;
	}

	public CaseFragment createCaseFragment() {
		return new DecodeCaseFragment();
	}

	public boolean supportsTemporaryTables() {
		return true;
	}

	public String getCreateTemporaryTablePostfix() {
		return "ignore rollback";
	}

	public String generateTemporaryTableName(String baseTableName) {
		return "temp." + super.generateTemporaryTableName(baseTableName);
	}

}

Other Hibernate examples (source code examples)

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