libraries/constraints/src/main/java/org/apache/zest/library/constraints/MinLengthConstraint.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.zest.library.constraints;

import org.apache.zest.api.constraint.Constraint;
import org.apache.zest.library.constraints.annotation.MinLength;

/**
 * Implement @MinLength constraint.
 */
public class MinLengthConstraint
    implements Constraint<MinLength, String>
{

    private static final long serialVersionUID = 1L;

    @Override
    public boolean isValid( MinLength annotation, String parameter )
        throws NullPointerException
    {
        if( parameter != null )
        {
            return parameter.length() >= annotation.value();
        }

        return false;
    }

}