Package net.timewalker.ffmq3.common.message.selector.expression.literal

Source Code of net.timewalker.ffmq3.common.message.selector.expression.literal.StringLiteralList

/*
* This file is part of FFMQ.
*
* FFMQ is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* FFMQ 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 FFMQ; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
package net.timewalker.ffmq3.common.message.selector.expression.literal;

import javax.jms.InvalidSelectorException;
import javax.jms.JMSException;
import javax.jms.Message;

import net.timewalker.ffmq3.common.message.selector.expression.AtomicOperand;
import net.timewalker.ffmq3.common.message.selector.expression.SelectorNode;

/**
* LiteralList
*/
public final class StringLiteralList extends SelectorNode implements AtomicOperand
{
    private SelectorNode[] items;
   
    /**
     * Constructor
     */
    public StringLiteralList( SelectorNode[] items ) throws InvalidSelectorException
    {
        super();
        this.items = items;
        for (int i = 0; i < items.length; i++)
          if (!(items[i] instanceof StringLiteral))
              throw new InvalidSelectorException("Only string literals are allowed after IN operator");
    }

    /*
     * (non-Javadoc)
     * @see net.timewalker.ffmq3.common.message.selector.expression.SelectorNode#evaluate(javax.jms.Message)
     */
    public Object evaluate(Message message) throws JMSException
    {
        String[] values = new String[items.length];
        for (int n = 0 ; n < items.length ; n++)
            values[n] = items[n].evaluateString(message);
       
        return values;
    }

    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    public String toString()
    {
        StringBuffer sb = new StringBuffer();
        sb.append("(");
        for (int n = 0 ; n < items.length ; n++)
        {
            if (n>0)
                sb.append(",");
            sb.append(String.valueOf(items[n]));
        }
        sb.append(")");
        return sb.toString();
    }
}
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