Package org.hibernate.dialect

Source Code of org.hibernate.dialect.Oracle9Dialect

/*
* 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.CallableStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

import org.hibernate.cfg.Environment;
import org.hibernate.dialect.function.NoArgSQLFunction;
import org.hibernate.dialect.function.NvlFunction;
import org.hibernate.dialect.function.SQLFunctionTemplate;
import org.hibernate.dialect.function.StandardSQLFunction;
import org.hibernate.dialect.function.VarArgsSQLFunction;
import org.hibernate.exception.spi.TemplatedViolatedConstraintNameExtracter;
import org.hibernate.exception.spi.ViolatedConstraintNameExtracter;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.internal.util.JdbcExceptionHelper;
import org.hibernate.type.StandardBasicTypes;

import org.jboss.logging.Logger;

/**
* An SQL dialect for Oracle 9 (uses ANSI-style syntax where possible).
*
* @author Gavin King
* @author David Channon
*
* @deprecated Use either Oracle9iDialect or Oracle10gDialect instead
*/
@SuppressWarnings("deprecation")
@Deprecated
public class Oracle9Dialect extends Dialect {

  private static final int PARAM_LIST_SIZE_LIMIT = 1000;

  private static final CoreMessageLogger LOG = Logger.getMessageLogger(
      CoreMessageLogger.class,
      Oracle9Dialect.class.getName()
  );

  /**
   * Constructs a Oracle9Dialect
   */
  public Oracle9Dialect() {
    super();
    LOG.deprecatedOracle9Dialect();
    registerColumnType( Types.BIT, "number(1,0)" );
    registerColumnType( Types.BIGINT, "number(19,0)" );
    registerColumnType( Types.SMALLINT, "number(5,0)" );
    registerColumnType( Types.TINYINT, "number(3,0)" );
    registerColumnType( Types.INTEGER, "number(10,0)" );
    registerColumnType( Types.CHAR, "char(1 char)" );
    registerColumnType( Types.VARCHAR, 4000, "varchar2($l char)" );
    registerColumnType( Types.VARCHAR, "long" );
    registerColumnType( Types.FLOAT, "float" );
    registerColumnType( Types.DOUBLE, "double precision" );
    registerColumnType( Types.DATE, "date" );
    registerColumnType( Types.TIME, "date" );
    registerColumnType( Types.TIMESTAMP, "timestamp" );
    registerColumnType( Types.VARBINARY, 2000, "raw($l)" );
    registerColumnType( Types.VARBINARY, "long raw" );
    registerColumnType( Types.NUMERIC, "number($p,$s)" );
    registerColumnType( Types.DECIMAL, "number($p,$s)" );
    registerColumnType( Types.BLOB, "blob" );
    registerColumnType( Types.CLOB, "clob" );

    // Oracle driver reports to support getGeneratedKeys(), but they only
    // support the version taking an array of the names of the columns to
    // be returned (via its RETURNING clause).  No other driver seems to
    // support this overloaded version.
    getDefaultProperties().setProperty( Environment.USE_GET_GENERATED_KEYS, "false" );
    getDefaultProperties().setProperty( Environment.USE_STREAMS_FOR_BINARY, "true" );
    getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE );

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

    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( "exp", new StandardSQLFunction( "exp", StandardBasicTypes.DOUBLE ) );
    registerFunction( "ln", new StandardSQLFunction( "ln", StandardBasicTypes.DOUBLE ) );
    registerFunction( "sin", new StandardSQLFunction( "sin", StandardBasicTypes.DOUBLE ) );
    registerFunction( "sinh", new StandardSQLFunction( "sinh", StandardBasicTypes.DOUBLE ) );
    registerFunction( "stddev", new StandardSQLFunction( "stddev", StandardBasicTypes.DOUBLE ) );
    registerFunction( "sqrt", new StandardSQLFunction( "sqrt", StandardBasicTypes.DOUBLE ) );
    registerFunction( "tan", new StandardSQLFunction( "tan", StandardBasicTypes.DOUBLE ) );
    registerFunction( "tanh", new StandardSQLFunction( "tanh", StandardBasicTypes.DOUBLE ) );
    registerFunction( "variance", new StandardSQLFunction( "variance", StandardBasicTypes.DOUBLE ) );

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

    registerFunction( "chr", new StandardSQLFunction( "chr", StandardBasicTypes.CHARACTER ) );
    registerFunction( "initcap", new StandardSQLFunction( "initcap" ) );
    registerFunction( "lower", new StandardSQLFunction( "lower" ) );
    registerFunction( "ltrim", new StandardSQLFunction( "ltrim" ) );
    registerFunction( "rtrim", new StandardSQLFunction( "rtrim" ) );
    registerFunction( "soundex", new StandardSQLFunction( "soundex" ) );
    registerFunction( "upper", new StandardSQLFunction( "upper" ) );
    registerFunction( "ascii", new StandardSQLFunction( "ascii", StandardBasicTypes.INTEGER ) );

    registerFunction( "to_char", new StandardSQLFunction( "to_char", StandardBasicTypes.STRING ) );
    registerFunction( "to_date", new StandardSQLFunction( "to_date", StandardBasicTypes.TIMESTAMP ) );

    registerFunction( "current_date", new NoArgSQLFunction( "current_date", StandardBasicTypes.DATE, false ) );
    registerFunction( "current_time", new NoArgSQLFunction( "current_timestamp", StandardBasicTypes.TIME, false ) );
    registerFunction(
        "current_timestamp", new NoArgSQLFunction(
        "current_timestamp",
        StandardBasicTypes.TIMESTAMP,
        false
    )
    );

    registerFunction( "last_day", new StandardSQLFunction( "last_day", StandardBasicTypes.DATE ) );
    registerFunction( "sysdate", new NoArgSQLFunction( "sysdate", StandardBasicTypes.DATE, false ) );
    registerFunction( "systimestamp", new NoArgSQLFunction( "systimestamp", StandardBasicTypes.TIMESTAMP, false ) );
    registerFunction( "uid", new NoArgSQLFunction( "uid", StandardBasicTypes.INTEGER, false ) );
    registerFunction( "user", new NoArgSQLFunction( "user", StandardBasicTypes.STRING, false ) );

    registerFunction( "rowid", new NoArgSQLFunction( "rowid", StandardBasicTypes.LONG, false ) );
    registerFunction( "rownum", new NoArgSQLFunction( "rownum", StandardBasicTypes.LONG, false ) );

    // Multi-param string dialect functions...
    registerFunction( "concat", new VarArgsSQLFunction( StandardBasicTypes.STRING, "", "||", "" ) );
    registerFunction( "instr", new StandardSQLFunction( "instr", StandardBasicTypes.INTEGER ) );
    registerFunction( "instrb", new StandardSQLFunction( "instrb", StandardBasicTypes.INTEGER ) );
    registerFunction( "lpad", new StandardSQLFunction( "lpad", StandardBasicTypes.STRING ) );
    registerFunction( "replace", new StandardSQLFunction( "replace", StandardBasicTypes.STRING ) );
    registerFunction( "rpad", new StandardSQLFunction( "rpad", StandardBasicTypes.STRING ) );
    registerFunction( "substr", new StandardSQLFunction( "substr", StandardBasicTypes.STRING ) );
    registerFunction( "substrb", new StandardSQLFunction( "substrb", StandardBasicTypes.STRING ) );
    registerFunction( "translate", new StandardSQLFunction( "translate", StandardBasicTypes.STRING ) );

    registerFunction( "substring", new StandardSQLFunction( "substr", StandardBasicTypes.STRING ) );
    registerFunction( "locate", new SQLFunctionTemplate( StandardBasicTypes.INTEGER, "instr(?2,?1)" ) );
    registerFunction( "bit_length", new SQLFunctionTemplate( StandardBasicTypes.INTEGER, "vsize(?1)*8" ) );
    registerFunction( "coalesce", new NvlFunction() );

    // Multi-param numeric dialect functions...
    registerFunction( "atan2", new StandardSQLFunction( "atan2", StandardBasicTypes.FLOAT ) );
    registerFunction( "log", new StandardSQLFunction( "log", StandardBasicTypes.INTEGER ) );
    registerFunction( "mod", new StandardSQLFunction( "mod", StandardBasicTypes.INTEGER ) );
    registerFunction( "nvl", new StandardSQLFunction( "nvl" ) );
    registerFunction( "nvl2", new StandardSQLFunction( "nvl2" ) );
    registerFunction( "power", new StandardSQLFunction( "power", StandardBasicTypes.FLOAT ) );

    // Multi-param date dialect functions...
    registerFunction( "add_months", new StandardSQLFunction( "add_months", StandardBasicTypes.DATE ) );
    registerFunction( "months_between", new StandardSQLFunction( "months_between", StandardBasicTypes.FLOAT ) );
    registerFunction( "next_day", new StandardSQLFunction( "next_day", StandardBasicTypes.DATE ) );

    registerFunction( "str", new StandardSQLFunction( "to_char", StandardBasicTypes.STRING ) );
  }

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

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

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

  @Override
  public String getCreateSequenceString(String sequenceName) {
    //starts with 1, implicitly
    return "create sequence " + sequenceName;
  }

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

  @Override
  public String getCascadeConstraintsString() {
    return " cascade constraints";
  }

  @Override
  public boolean dropConstraints() {
    return false;
  }

  @Override
  public String getForUpdateNowaitString() {
    return " for update nowait";
  }

  @Override
  public boolean supportsSequences() {
    return true;
  }

  @Override
  public boolean supportsPooledSequences() {
    return true;
  }

  @Override
  public boolean supportsLimit() {
    return true;
  }

  @Override
  public String getLimitString(String sql, boolean hasOffset) {

    sql = sql.trim();
    boolean isForUpdate = false;
    if ( sql.toLowerCase().endsWith( " for update" ) ) {
      sql = sql.substring( 0, sql.length() - 11 );
      isForUpdate = true;
    }

    final StringBuilder pagingSelect = new StringBuilder( sql.length() + 100 );
    if ( hasOffset ) {
      pagingSelect.append( "select * from ( select row_.*, rownum rownum_ from ( " );
    }
    else {
      pagingSelect.append( "select * from ( " );
    }
    pagingSelect.append( sql );
    if ( hasOffset ) {
      pagingSelect.append( " ) row_ where rownum <= ?) where rownum_ > ?" );
    }
    else {
      pagingSelect.append( " ) where rownum <= ?" );
    }

    if ( isForUpdate ) {
      pagingSelect.append( " for update" );
    }

    return pagingSelect.toString();
  }

  @Override
  public String getForUpdateString(String aliases) {
    return getForUpdateString() + " of " + aliases;
  }

  @Override
  public String getForUpdateNowaitString(String aliases) {
    return getForUpdateString() + " of " + aliases + " nowait";
  }

  @Override
  public boolean bindLimitParametersInReverseOrder() {
    return true;
  }

  @Override
  public boolean useMaxForLimit() {
    return true;
  }

  @Override
  public boolean forUpdateOfColumns() {
    return true;
  }

  @Override
  public String getQuerySequencesString() {
    return "select sequence_name from user_sequences";
  }

  @Override
  public String getSelectGUIDString() {
    return "select rawtohex(sys_guid()) from dual";
  }

  @Override
  public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
    return EXTRACTER;
  }

  private static final ViolatedConstraintNameExtracter EXTRACTER = new TemplatedViolatedConstraintNameExtracter() {
    @Override
    public String extractConstraintName(SQLException sqle) {
      final int errorCode = JdbcExceptionHelper.extractErrorCode( sqle );
      if ( errorCode == 1 || errorCode == 2291 || errorCode == 2292 ) {
        return extractUsingTemplate( "constraint (", ") violated", sqle.getMessage() );
      }
      else if ( errorCode == 1400 ) {
        // simple nullability constraint
        return null;
      }
      else {
        return null;
      }
    }
  };

  @Override
  public int registerResultSetOutParameter(java.sql.CallableStatement statement, int col) throws SQLException {
    //  register the type of the out param - an Oracle specific type
    statement.registerOutParameter( col, OracleTypesHelper.INSTANCE.getOracleCursorTypeSqlType() );
    col++;
    return col;
  }

  @Override
  public ResultSet getResultSet(CallableStatement ps) throws SQLException {
    ps.execute();
    return (ResultSet) ps.getObject( 1 );
  }

  @Override
  public boolean supportsUnionAll() {
    return true;
  }

  @Override
  public boolean supportsCommentOn() {
    return true;
  }

  @Override
  public boolean supportsTemporaryTables() {
    return true;
  }

  @Override
  public String generateTemporaryTableName(String baseTableName) {
    final String name = super.generateTemporaryTableName( baseTableName );
    return name.length() > 30 ? name.substring( 1, 30 ) : name;
  }

  @Override
  public String getCreateTemporaryTableString() {
    return "create global temporary table";
  }

  @Override
  public String getCreateTemporaryTablePostfix() {
    return "on commit delete rows";
  }

  @Override
  public boolean dropTemporaryTableAfterUse() {
    return false;
  }

  @Override
  public boolean supportsCurrentTimestampSelection() {
    return true;
  }

  @Override
  public String getCurrentTimestampSelectString() {
    return "select systimestamp from dual";
  }

  @Override
  public boolean isCurrentTimestampSelectStringCallable() {
    return false;
  }

  @Override
  public boolean supportsEmptyInList() {
    return false;
  }

  @Override
  public boolean supportsExistsInSelect() {
    return false;
  }

  @Override
  public int getInExpressionCountLimit() {
    return PARAM_LIST_SIZE_LIMIT;
  }

  @Override
  public String getNotExpression(String expression) {
    return "not (" + expression + ")";
  }
}
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