h2dialect.java

hibernate-distribution-3.3.1.GA-dist.zip源码

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
 *
 * 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.SQLException;
import java.sql.Types;

import org.hibernate.Hibernate;
import org.hibernate.cfg.Environment;
import org.hibernate.dialect.function.NoArgSQLFunction;
import org.hibernate.dialect.function.StandardSQLFunction;
import org.hibernate.dialect.function.VarArgsSQLFunction;
import org.hibernate.exception.TemplatedViolatedConstraintNameExtracter;
import org.hibernate.exception.ViolatedConstraintNameExtracter;
import org.hibernate.util.ReflectHelper;

/**
 * A dialect compatible with the H2 database.
 * 
 * @author Thomas Mueller
 *
 */
public class H2Dialect extends Dialect {

    private String querySequenceString;
    public H2Dialect() {
        super();
               
        querySequenceString = "select sequence_name from information_schema.sequences";
        try {
        	// HHH-2300
            Class constants = ReflectHelper.classForName( "org.h2.engine.Constants" );
            Integer build = (Integer)constants.getDeclaredField("BUILD_ID" ).get(null);
            int buildid = build.intValue();
            if(buildid < 32) {
                querySequenceString = "select name from information_schema.sequences";
            }
        } catch(Throwable e) {
            // ignore (probably H2 not in the classpath)
        }
        registerColumnType(Types.BOOLEAN, "boolean");
        registerColumnType(Types.BIGINT, "bigint");
        registerColumnType(Types.BINARY, "binary");
        registerColumnType(Types.BIT, "bit");
        registerColumnType(Types.CHAR, "char($l)");
        registerColumnType(Types.DATE, "date");
        registerColumnType(Types.DECIMAL, "decimal($p,$s)");
        registerColumnType(Types.DOUBLE, "double");
        registerColumnType(Types.FLOAT, "float");
        registerColumnType(Types.INTEGER, "integer");
        registerColumnType(Types.LONGVARBINARY, "longvarbinary");
        registerColumnType(Types.LONGVARCHAR, "longvarchar");
        registerColumnType(Types.REAL, "real");        
        registerColumnType(Types.SMALLINT, "smallint");
        registerColumnType(Types.TINYINT, "tinyint");
        registerColumnType(Types.TIME, "time");
        registerColumnType(Types.TIMESTAMP, "timestamp");
        registerColumnType(Types.VARCHAR, "varchar($l)");
        registerColumnType(Types.VARBINARY, "binary($l)");
        registerColumnType(Types.NUMERIC, "numeric");
        registerColumnType(Types.BLOB, "blob");
        registerColumnType(Types.CLOB, "clob");
        
        // select topic, syntax from information_schema.help
        // where section like 'Function%' order by section, topic

//        registerFunction("abs", new StandardSQLFunction("abs"));
        registerFunction("acos", new StandardSQLFunction("acos", Hibernate.DOUBLE));
        registerFunction("asin", new StandardSQLFunction("asin", Hibernate.DOUBLE));
        registerFunction("atan", new StandardSQLFunction("atan", Hibernate.DOUBLE));
        registerFunction("atan2", new StandardSQLFunction("atan2", Hibernate.DOUBLE));
        registerFunction("bitand", new StandardSQLFunction("bitand", Hibernate.INTEGER));
        registerFunction("bitor", new StandardSQLFunction("bitor", Hibernate.INTEGER));
        registerFunction("bitxor", new StandardSQLFunction("bitxor", Hibernate.INTEGER));
        registerFunction("ceiling", new StandardSQLFunction("ceiling", Hibernate.DOUBLE));
        registerFunction("cos", new StandardSQLFunction("cos", Hibernate.DOUBLE));
        registerFunction("cot", new StandardSQLFunction("cot", Hibernate.DOUBLE));
        registerFunction("degrees", new StandardSQLFunction("degrees", Hibernate.DOUBLE));
        registerFunction("exp", new StandardSQLFunction("exp", Hibernate.DOUBLE));
        registerFunction("floor", new StandardSQLFunction("floor", Hibernate.DOUBLE));
        registerFunction("log", new StandardSQLFunction("log", Hibernate.DOUBLE));
        registerFunction("log10", new StandardSQLFunction("log10", Hibernate.DOUBLE));
//        registerFunction("mod", new StandardSQLFunction("mod", Hibernate.INTEGER));
        registerFunction("pi", new NoArgSQLFunction("pi", Hibernate.DOUBLE));
        registerFunction("power", new StandardSQLFunction("power", Hibernate.DOUBLE));
        registerFunction("radians", new StandardSQLFunction("radians", Hibernate.DOUBLE));
        registerFunction("rand", new NoArgSQLFunction("rand", Hibernate.DOUBLE));
        registerFunction("round", new StandardSQLFunction("round", Hibernate.DOUBLE));
        registerFunction("roundmagic", new StandardSQLFunction("roundmagic", Hibernate.DOUBLE));
        registerFunction("sign", new StandardSQLFunction("sign", Hibernate.INTEGER));
        registerFunction("sin", new StandardSQLFunction("sin", Hibernate.DOUBLE));
//        registerFunction("sqrt", new StandardSQLFunction("sqrt", Hibernate.DOUBLE));
        registerFunction("tan", new StandardSQLFunction("tan", Hibernate.DOUBLE));
        registerFunction("truncate", new StandardSQLFunction("truncate", Hibernate.DOUBLE));

        registerFunction("compress", new StandardSQLFunction("compress", Hibernate.BINARY));
        registerFunction("expand", new StandardSQLFunction("compress", Hibernate.BINARY));
        registerFunction("decrypt", new StandardSQLFunction("decrypt", Hibernate.BINARY));
        registerFunction("encrypt", new StandardSQLFunction("encrypt", Hibernate.BINARY));
        registerFunction("hash", new StandardSQLFunction("hash", Hibernate.BINARY));

        registerFunction("ascii", new StandardSQLFunction("ascii", Hibernate.INTEGER));
//        registerFunction("bit_length", new StandardSQLFunction("bit_length", Hibernate.INTEGER));
        registerFunction("char", new StandardSQLFunction("char", Hibernate.CHARACTER));
        registerFunction("concat", new VarArgsSQLFunction(Hibernate.STRING, "(", "||", ")"));
        registerFunction("difference", new StandardSQLFunction("difference", Hibernate.INTEGER));
        registerFunction("hextoraw", new StandardSQLFunction("hextoraw", Hibernate.STRING));
        registerFunction("lower", new StandardSQLFunction("lower", Hibernate.STRING));
        registerFunction("insert", new StandardSQLFunction("lower", Hibernate.STRING));
        registerFunction("left", new StandardSQLFunction("left", Hibernate.STRING));
//        registerFunction("length", new StandardSQLFunction("length", Hibernate.INTEGER));
//        registerFunction("locate", new StandardSQLFunction("locate", Hibernate.INTEGER));
//        registerFunction("lower", new StandardSQLFunction("lower", Hibernate.STRING));
        registerFunction("lcase", new StandardSQLFunction("lcase", Hibernate.STRING));
        registerFunction("ltrim", new StandardSQLFunction("ltrim", Hibernate.STRING));
        registerFunction("octet_length", new StandardSQLFunction("octet_length", Hibernate.INTEGER));
        registerFunction("position", new StandardSQLFunction("position", Hibernate.INTEGER));
        registerFunction("rawtohex", new StandardSQLFunction("rawtohex", Hibernate.STRING));
        registerFunction("repeat", new StandardSQLFunction("repeat", Hibernate.STRING));
        registerFunction("replace", new StandardSQLFunction("replace", Hibernate.STRING));
        registerFunction("right", new StandardSQLFunction("right", Hibernate.STRING));
        registerFunction("rtrim", new StandardSQLFunction("rtrim", Hibernate.STRING));
        registerFunction("soundex", new StandardSQLFunction("soundex", Hibernate.STRING));
        registerFunction("space", new StandardSQLFunction("space", Hibernate.STRING));
        registerFunction("stringencode", new StandardSQLFunction("stringencode", Hibernate.STRING));
        registerFunction("stringdecode", new StandardSQLFunction("stringdecode", Hibernate.STRING));
//        registerFunction("substring", new StandardSQLFunction("substring", Hibernate.STRING));
//        registerFunction("upper", new StandardSQLFunction("upper", Hibernate.STRING));
        registerFunction("ucase", new StandardSQLFunction("ucase", Hibernate.STRING));

        registerFunction("stringtoutf8", new StandardSQLFunction("stringtoutf8", Hibernate.BINARY));
        registerFunction("utf8tostring", new StandardSQLFunction("utf8tostring", Hibernate.STRING));

        registerFunction("current_date", new NoArgSQLFunction("current_date", Hibernate.DATE));
        registerFunction("current_time", new NoArgSQLFunction("current_time", Hibernate.TIME));
        registerFunction("current_timestamp", new NoArgSQLFunction("current_timestamp", Hibernate.TIMESTAMP));
        registerFunction("datediff", new StandardSQLFunction("datediff", Hibernate.INTEGER));
        registerFunction("dayname", new StandardSQLFunction("dayname", Hibernate.STRING));
        registerFunction("dayofmonth", new StandardSQLFunction("dayofmonth", Hibernate.INTEGER));