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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping.request;
import java.util.Arrays;
/**
* This class represents an uca-function in a {@link GroupingExpression}.
*
* @author <a href="mailto:lulf@yahoo-inc.com">Ulf Lilleengen</a>
*/
public class UcaFunction extends FunctionNode {
private final String locale;
private final String strength;
/**
* Constructs a new instance of this class.
*
* @param exp The expression to evaluate.
* @param locale The locale to used for sorting.
*/
public UcaFunction(GroupingExpression exp, String locale) {
super("uca", Arrays.asList(exp, new StringValue(locale)));
this.locale = locale;
this.strength = "TERTIARY";
}
/**
* Constructs a new instance of this class.
*
* @param exp The expression to evaluate.
* @param locale The locale to used for sorting.
* @param strength The strength level to use.
*/
public UcaFunction(GroupingExpression exp, String locale, String strength) {
super("uca", Arrays.asList(exp, new StringValue(locale), new StringValue(strength)));
if (!validStrength(strength)) {
throw new IllegalArgumentException("Not a valid UCA strength: " + strength);
}
this.locale = locale;
this.strength = strength;
}
private boolean validStrength(String strength) {
return (strength.equals("PRIMARY") ||
strength.equals("SECONDARY") ||
strength.equals("TERTIARY") ||
strength.equals("QUATERNARY") ||
strength.equals("IDENTICAL"));
}
public String getLocale() {
return locale;
}
public String getStrength() {
return strength;
}
}
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