/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*
*/
package org.apache.qpid.server.filter;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;
import org.apache.log4j.Logger;
import org.apache.qpid.filter.BooleanExpression;
import org.apache.qpid.filter.FilterableMessage;
import org.apache.qpid.filter.SelectorParsingException;
import org.apache.qpid.filter.selector.ParseException;
import org.apache.qpid.filter.selector.SelectorParser;
import org.apache.qpid.filter.selector.TokenMgrError;
import org.apache.qpid.server.queue.Filterable;
public class JMSSelectorFilter implements MessageFilter
{
private final static Logger _logger = org.apache.log4j.Logger.getLogger(JMSSelectorFilter.class);
private String _selector;
private BooleanExpression _matcher;
public JMSSelectorFilter(String selector) throws ParseException, TokenMgrError, SelectorParsingException
{
_selector = selector;
_matcher = new SelectorParser().parse(selector);
}
public boolean matches(Filterable message)
{
boolean match = _matcher.matches(wrap(message));
if(_logger.isDebugEnabled())
{
_logger.debug(message + " match(" + match + ") selector(" + System.identityHashCode(_selector) + "):" + _selector);
}
return match;
}
private FilterableMessage wrap(final Filterable message)
{
return new FilterableMessage()
{
public boolean isPersistent()
{
return message.isPersistent();
}
public boolean isRedelivered()
{
return message.isRedelivered();
}
public Object getHeader(String name)
{
return message.getMessageHeader().getHeader(name);
}
public String getReplyTo()
{
return message.getMessageHeader().getReplyTo();
}
public String getType()
{
return message.getMessageHeader().getType();
}
public byte getPriority()
{
return message.getMessageHeader().getPriority();
}
public String getMessageId()
{
return message.getMessageHeader().getMessageId();
}
public long getTimestamp()
{
return message.getMessageHeader().getTimestamp();
}
public String getCorrelationId()
{
return message.getMessageHeader().getCorrelationId();
}
public long getExpiration()
{
return message.getMessageHeader().getExpiration();
}
};
}
public String getSelector()
{
return _selector;
}
@Override
public String toString()
{
return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)
.append("selector", _selector)
.toString();
}
@Override
public int hashCode()
{
return new HashCodeBuilder().append(_selector).toHashCode();
}
@Override
public boolean equals(Object obj)
{
if (obj == null)
{
return false;
}
if (obj == this)
{
return true;
}
if (obj.getClass() != getClass())
{
return false;
}
JMSSelectorFilter rhs = (JMSSelectorFilter) obj;
return new EqualsBuilder().append(_selector, rhs._selector).isEquals();
}
}