javax.mail.search.StringTerm Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2016 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.mail.search;
/**
* This class implements the match method for Strings. The current
* implementation provides only for substring matching. We
* could add comparisons (like strcmp ...).
*
* @author Bill Shannon
* @author John Mani
*/
public abstract class StringTerm extends SearchTerm {
/**
* The pattern.
*
* @serial
*/
protected String pattern;
/**
* Ignore case when comparing?
*
* @serial
*/
protected boolean ignoreCase;
private static final long serialVersionUID = 1274042129007696269L;
/**
* Construct a StringTerm with the given pattern.
* Case will be ignored.
*
* @param pattern the pattern
*/
protected StringTerm(String pattern) {
this.pattern = pattern;
ignoreCase = true;
}
/**
* Construct a StringTerm with the given pattern and ignoreCase flag.
*
* @param pattern the pattern
* @param ignoreCase should we ignore case?
*/
protected StringTerm(String pattern, boolean ignoreCase) {
this.pattern = pattern;
this.ignoreCase = ignoreCase;
}
/**
* Return the string to match with.
*
* @return the string to match
*/
public String getPattern() {
return pattern;
}
/**
* Return true if we should ignore case when matching.
*
* @return true if we should ignore case
*/
public boolean getIgnoreCase() {
return ignoreCase;
}
protected boolean match(String s) {
int len = s.length() - pattern.length();
for (int i=0; i <= len; i++) {
if (s.regionMatches(ignoreCase, i,
pattern, 0, pattern.length()))
return true;
}
return false;
}
/**
* Equality comparison.
*/
@Override
public boolean equals(Object obj) {
if (!(obj instanceof StringTerm))
return false;
StringTerm st = (StringTerm)obj;
if (ignoreCase)
return st.pattern.equalsIgnoreCase(this.pattern) &&
st.ignoreCase == this.ignoreCase;
else
return st.pattern.equals(this.pattern) &&
st.ignoreCase == this.ignoreCase;
}
/**
* Compute a hashCode for this object.
*/
@Override
public int hashCode() {
return ignoreCase ? pattern.hashCode() : ~pattern.hashCode();
}
}