netbout-lite-1.5.6.src.main.java.com.netbout.lite.QueryTerm Maven / Gradle / Ivy
/**
* Copyright (c) 2009-2012, Netbout.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met: 1) Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer. 2) Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution. 3) Neither the name of the NetBout.com nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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*/
package com.netbout.lite;
import com.jcabi.log.Logger;
import com.netbout.spi.Message;
import com.netbout.spi.Query;
import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CharStream;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.TokenStream;
/**
* Simple term, based on {@link Query}.
*
* This class is immutable and thread-safe.
*
* @author Yegor Bugayenko ([email protected])
* @version $Id: QueryTerm.java 3526 2012-10-30 07:30:27Z guard $
*/
final class QueryTerm implements Term {
/**
* The composite term.
*/
private final transient Term term;
/**
* Public ctor.
* @param query Original query
*/
public QueryTerm(final Query query) {
final CharStream input = new ANTLRStringStream(query.toString());
final QueryLexer lexer = new QueryLexer(input);
final TokenStream tokens = new CommonTokenStream(lexer);
final QueryParser parser = new QueryParser(tokens);
try {
this.term = parser.term();
} catch (org.antlr.runtime.RecognitionException ex) {
throw new IllegalArgumentException(query.toString(), ex);
} catch (IllegalArgumentException ex) {
throw new IllegalArgumentException(query.toString(), ex);
}
Logger.debug(
this,
"#QueryTerm('%[text]s'): parsed to '%s'",
query,
this.term
);
}
/**
* {@inheritDoc}
*/
@Override
public boolean matches(final Message message) {
return this.term.matches(message);
}
/**
* {@inheritDoc}
*/
@Override
public String value(final Message message) {
throw new UnsupportedOperationException(
"QueryTerm doesn't have a value"
);
}
}