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/*******************************************************************************
* Copyright (c) 2010, 2013 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.linuxtools.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.linuxtools.tmf.core.event.ITmfEvent;
/**
* Filter node for the regex match
*
* @version 1.0
* @author Patrick Tasse
*/
@SuppressWarnings("javadoc")
public class TmfFilterMatchesNode extends TmfFilterTreeNode {
public static final String NODE_NAME = "MATCHES"; //$NON-NLS-1$
public static final String NOT_ATTR = "not"; //$NON-NLS-1$
public static final String FIELD_ATTR = "field"; //$NON-NLS-1$
public static final String REGEX_ATTR = "regex"; //$NON-NLS-1$
private boolean fNot = false;
private String fField;
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 field name
*/
public String getField() {
return fField;
}
/**
* @param field
* the field name
*/
public void setField(String field) {
this.fField = field;
}
/**
* @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;
}
}
}
@Override
public String getNodeName() {
return NODE_NAME;
}
@Override
public boolean matches(ITmfEvent event) {
if (fPattern == null) {
return false ^ fNot;
}
Object value = getFieldValue(event, fField);
if (value == null) {
return false ^ fNot;
}
String valueString = value.toString();
return fPattern.matcher(valueString).matches() ^ fNot;
}
@Override
public List<String> getValidChildren() {
return new ArrayList<>(0);
}
@Override
public String toString() {
return fField + (fNot ? " not" : "") + " matches \"" + fRegex + "\""; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
}
@Override
public ITmfFilterTreeNode clone() {
TmfFilterMatchesNode clone = (TmfFilterMatchesNode) super.clone();
clone.fField = fField;
clone.setRegex(fRegex);
return clone;
}
/**
* @param pattern
* the rough regex pattern
* @return the compliant regex
*/
public static String regexFix(String pattern) {
String ret = pattern;
// if the pattern does not contain one of the expressions .* !^
// (at the beginning) $ (at the end), then a .* is added at the
// beginning and at the end of the pattern
if (!(ret.indexOf(".*") >= 0 || ret.charAt(0) == '^' || ret.charAt(ret.length() - 1) == '$')) { //$NON-NLS-1$
ret = ".*" + ret + ".*"; //$NON-NLS-1$ //$NON-NLS-2$
}
return ret;
}
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((fField == null) ? 0 : fField.hashCode());
result = prime * result + (fNot ? 1231 : 1237);
result = prime * result + ((fRegex == null) ? 0 : fRegex.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!super.equals(obj)) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
TmfFilterMatchesNode other = (TmfFilterMatchesNode) obj;
if (fField == null) {
if (other.fField != null) {
return false;
}
} else if (!fField.equals(other.fField)) {
return false;
}
if (fNot != other.fNot) {
return false;
}
if (fRegex == null) {
if (other.fRegex != null) {
return false;
}
} else if (!fRegex.equals(other.fRegex)) {
return false;
}
return true;
}
}
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