package org.hibernate.dialect;
/**
* An SQL dialect for DB2/400. This class provides support for DB2 Universal Database for iSeries,
* also known as DB2/400.
*
* @author Peter DeGregorio (pdegregorio)
*/
public class DB2400Dialect extends DB2Dialect {
public boolean supportsSequences() {
return false;
}
public String getIdentitySelectString() {
return "select identity_val_local() from sysibm.sysdummy1";
}
public boolean supportsLimit() {
return true;
}
public boolean supportsLimitOffset() {
return false;
}
public boolean useMaxForLimit() {
return true;
}
public boolean supportsVariableLimit() {
return false;
}
public String getLimitString(String sql, int offset, int limit) {
if ( offset > 0 ) {
throw new UnsupportedOperationException( "query result offset is not supported" );
}
return new StringBuffer( sql.length() + 40 )
.append( sql )
.append( " fetch first " )
.append( limit )
.append( " rows only " )
.toString();
}
}
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