/*
* Copyright (c) 2007 BUSINESS OBJECTS SOFTWARE LIMITED
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of Business Objects 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 OWNER 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, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* RegExpBasedModuleFilter.java
* Creation date: Oct 14, 2005.
* By: Joseph Wong
*/
package org.openquark.cal.filter;
import java.util.regex.Pattern;
import org.openquark.cal.compiler.ModuleName;
/**
* A module filter based on a regular expression pattern. The filter can be configured to either
* include only those modules matching the pattern, or to exclude the modules matching the pattern.
*
* @author Joseph Wong
*/
public final class RegExpBasedModuleFilter implements ModuleFilter {
/** The regular expression pattern. */
private final Pattern moduleNamePattern;
/** Whether the filter should accept or reject the matches. */
private final boolean filterShouldAcceptMatches;
/**
* Constructs an instance of this filter.
* @param moduleNameRegExp the regular expression pattern.
* @param isExcludeFilter true if this filter is to work in exclusion mode; false if this filter is to work in include-only mode.
*/
public RegExpBasedModuleFilter(final String moduleNameRegExp, boolean isExcludeFilter) {
if (moduleNameRegExp == null) {
throw new NullPointerException();
}
moduleNamePattern = Pattern.compile(moduleNameRegExp);
filterShouldAcceptMatches = !isExcludeFilter;
}
/**
* {@inheritDoc}
*/
public boolean acceptModule(final ModuleName moduleName) {
return moduleNamePattern.matcher(moduleName.toSourceText()).matches() == filterShouldAcceptMatches;
}
}