com.codename1.processing.ContainsEvaluator Maven / Gradle / Ivy
/*
* Copyright (c) 2012, Eric Coolman, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codename1.processing;
/**
* Internal class, do not use.
*
* This evaluator handles expressions that test if rvalue is contained in lvalue. Examples:
*
*
* Get all long name of the address component where the types array includes both values "neighborhood" and "political"
*
* /results/address_components[types % (neighborhood, political)]/long_name
*
* Get all long name of the address component where the types array includes a value of "political"
*
* /results/address_components[types % (neighborhood, political)]/long_name
*
* Get all long name of the address component where the short name contains "ny"
*
* /results/address_components[short_name % ny]/long_name
*
*
* @author Eric Coolman
*
*/
class ContainsEvaluator extends AbstractEvaluator {
/**
* Construct with a full predicate expression.
*
* @param expr a full predicate expression.
*/
public ContainsEvaluator(String expr) {
super(expr);
}
private String[] _getLeftValue(StructuredContent element, String lvalue) {
String v[];
// getChild() is a bit of a hack here because the content object
// calls getParent()
StructuredContent child = element.getChild(0);
Result result = Result.fromContent(child);
v = result.getAsStringArray(lvalue);
return v;
}
/*
* (non-Javadoc)
*
* @see
* com.codename1.path.impl.AbstractEvaluator#evaluateLeftEqualsRight(com
* .codename1.path.impl.StructuredContent, java.lang.String,
* java.lang.String)
*/
protected Object evaluateLeftContainsRight(StructuredContent element, String lvalue, String rvalue) {
String lvalues[] = _getLeftValue(element, lvalue);
if (lvalues == null) {
return null;
}
// if the rvalue is wrapped with "()", the caller explicitly expects the lvalue to be an array of values,
// otherwise try to do a "string contains" match first if there's only one lvalue
if (rvalue.indexOf("(") == -1 && lvalues.length == 1) {
if (lvalues[0].toLowerCase().indexOf(rvalue.toLowerCase()) != -1) {
return element;
}
}
String rvalues[] = explode(rvalue);
int i;
int lvlen = lvalues.length;
for (String r : rvalues) {
for (i = 0; i < lvlen; i++) {
String l = lvalues[i];
if (l.equalsIgnoreCase(r)) {
break;
}
}
if (i == lvlen) {
return null;
}
}
return element;
}
}