/*******************************************************************************
* Copyright (c) 2010, 2015 Ericsson
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v1.0 which
* accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Patrick Tasse - Initial API and implementation
*******************************************************************************/
package org.eclipse.tracecompass.tmf.core.filter.model;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
/**
* Filter node for the regex match
*
* @version 1.0
* @author Patrick Tasse
*/
public class TmfFilterMatchesNode extends TmfFilterAspectNode {
/** matches node name */
public static final String NODE_NAME = "MATCHES"; //$NON-NLS-1$
/** not attribute name */
public static final String NOT_ATTR = "not"; //$NON-NLS-1$
/** regex attribute name */
public static final String REGEX_ATTR = "regex"; //$NON-NLS-1$
private boolean fNot = false;
private String fRegex;
private transient Pattern fPattern;
/**
* @param parent
* the parent node
*/
public TmfFilterMatchesNode(ITmfFilterTreeNode parent) {
super(parent);
}
/**
* @return the NOT state
*/
public boolean isNot() {
return fNot;
}
/**
* @param not
* the NOT state
*/
public void setNot(boolean not) {
this.fNot = not;
}
/**
* @return the regular expression
*/
public String getRegex() {
return fRegex;
}
/**
* @param regex
* the regular expression
*/
public void setRegex(String regex) {
this.fRegex = regex;
if (regex != null) {
try {
this.fPattern = Pattern.compile(regex, Pattern.DOTALL);
} catch (PatternSyntaxException e) {
this.fPattern = null;
}
}
}
/**
* @return the regex pattern
*/
protected Pattern getPattern() {
return fPattern;
}
@Override
public String getNodeName() {
return NODE_NAME;
}
@Override
public boolean matches(ITmfEvent event) {
Pattern pattern = getPattern();
boolean isNot = isNot();
if (pattern == null || event == null || fEventAspect == null) {
return false ^ isNot;
}
Object value = fEventAspect.resolve(event);
if (value == null) {
return false ^ isNot;
}
return pattern.matcher(value.toString()).find() ^ isNot;
}
@Override
public List<String> getValidChildren() {
return new ArrayList<>(0);
}
@Override
public ITmfFilterTreeNode clone() {
TmfFilterMatchesNode clone = (TmfFilterMatchesNode) super.clone();
clone.setRegex(fRegex);
return clone;
}
@Override
public String toString(boolean explicit) {
return getAspectLabel(explicit) + (fNot ? " not matches \"" : " matches \"") + getRegex() + '\"'; //$NON-NLS-1$ //$NON-NLS-2$
}
}