/* JJT:	0.2.2 */
   
   package	mobisnap.mobile_trx;
   
   import java.util.*;
   
   /***
    * Implements sql expression
    */
  public class ASTPlSqlExpression extends	mobisnap.mobile_trx.SimpleNode {
  	public Vector ors;
  
  	public ASTPlSqlExpression(int id) {
  		super(id);
  		ors = new Vector();
  	}
  
  	public ASTPlSqlExpression( MobisnapSQL	p, int i) {
  		super( p, i);
  		id = i;
  		ors = new Vector();
  	}
  	
  	/*** Accept the visitor. **/
  	public Object jjtAccept(MobisnapSQLVisitor visitor, Object data) {
  		return visitor.visit(this, data);
  	}
  	
  	/***
  	 * Returns the value of the expression
  	 * 
  	 * @param msql_type Specifies which type of processing should be performed
  	 *		MobisnapConstants.MSQL_SERVER = 1
  	 *		MobisnapConstants.MSQL_TENTATIVE_CLIENT = 2
  	 *		MobisnapConstants.MSQL_STABLE_CLIENT = 3
  	 *		MobisnapConstants.MSQL_RESERVATION_CLIENT = 4
  	 * @param cond True if reservations associated iwth transaction should be 
  	 * propagated to the current transaction
  	 */
  	public Object value( int msql_type, boolean cond) throws Exception {
  		int n = ors.size();
  		if( n == 0)
  			throw new mobisnap.MobisnapException( "Internal error in expotent expression");
  		Object val = ((ASTPlSqlAndExpression)ors.elementAt(0)).value( msql_type, cond);
  		for( int i = 1; i < n; i++) {
  			Object aux = ((ASTPlSqlAndExpression)ors.elementAt( i)).value( msql_type, cond);
  			val = MSQLTypeUtil.or( val, aux);
  		}
  		return val;
  	}
  
  	/***
  	 * Displays the source code of the node
  	 */
  	public void	sourceCode(	int msql_type, StringBuffer buffer) throws Exception {
  		if( msql_type == mobisnap.MobisnapConstants.MSQL_ORIGINAL) {
  			super.sourceCode( msql_type, buffer);
  			return;
  		}
  			
  		Object obj = value( msql_type, false);
  		if( obj instanceof String) {
  			buffer.append( "'");
  			buffer.append( obj.toString());
  			buffer.append( "'");
  		} else if( obj instanceof java.sql.Date) {
  			buffer.append( "'");
  			buffer.append( MSQLTypeUtil.date2String( (java.sql.Date)obj));
  			buffer.append( "'");
  		} else
  			buffer.append( obj.toString());
  	}
  
  		
  }