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ValidateUnique.java
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/
ValidateUnique.java
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/*
* Copyright 2017 OmniFaces
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package org.omnifaces.component.validator;
import java.util.HashSet;
import java.util.List;
import javax.faces.component.FacesComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import org.omnifaces.validator.MultiFieldValidator;
/**
* <p>
* The <code><o:validateUnique></code> validates if ALL of the given {@link UIInput} components have an unique
* value.
* <p>
* The default message is
* <blockquote>{0}: Please fill out an unique value for all of those fields</blockquote>
* <p>
* For general usage instructions, refer {@link ValidateMultipleFields} documentation.
*
* @author Bauke Scholtz
* @see ValidateMultipleFields
* @see ValidatorFamily
* @see MultiFieldValidator
*/
@FacesComponent(ValidateUnique.COMPONENT_TYPE)
public class ValidateUnique extends ValidateMultipleFields {
// Public constants -----------------------------------------------------------------------------------------------
/** The standard component type. */
public static final String COMPONENT_TYPE = "org.omnifaces.component.validator.ValidateUnique";
// Actions --------------------------------------------------------------------------------------------------------
/**
* Validate if all values are unique.
*/
@Override
public boolean validateValues(FacesContext context, List<UIInput> inputs, List<Object> values) {
return (new HashSet<>(values).size() == inputs.size());
}
}