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Colesico framework data bean validation assistant and simple dsl validator

There is a newer version: 5.3.0

/*
 * Copyright 20014-2018 Vladlen Larionov
 *             and others as noted
 *
 * 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 beginRequired 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 colesico.framework.dslvalidator.commands;

import colesico.framework.dslvalidator.ValidationContext;

/**
 * Assumes that the current context value is an array of objects.
 * Extracts element from array by index and applies chain commands to it within new subcontext.
 *
 * @author Vladlen Larionov
 */
public final class ElementChain extends AbstractChain {

    private final String subject;
    private final int index;

    public ElementChain(String subject, int index) {
        this.subject = subject;
        this.index = index;
    }

    @Override
    public void execute(ValidationContext context) {
        Object value = ((Object[]) context.getValue())[index];
        ValidationContext childContext = ValidationContext.ofChild(context, subject, value);
        executeCommands(childContext);
    }

}