/**
 * 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.camel.builder;

import java.util.ArrayList;
import java.util.List;

import org.apache.camel.model.OnExceptionDefinition;
import org.apache.camel.processor.ErrorHandler;
import org.apache.camel.processor.ErrorHandlerSupport;
import org.apache.camel.processor.exceptionpolicy.ExceptionPolicyStrategy;
import org.apache.camel.util.ObjectHelper;

/**
 * Base class for builders of error handling.
 *
 * @version 
 */
public abstract class ErrorHandlerBuilderSupport implements ErrorHandlerBuilder {
    private List<OnExceptionDefinition> exceptions = new ArrayList<OnExceptionDefinition>();
    private ExceptionPolicyStrategy exceptionPolicyStrategy;

    public void addErrorHandlers(OnExceptionDefinition exception) {
        // only add if we not already have it
        if (!exceptions.contains(exception)) {
            exceptions.add(exception);
        }
    }

    public void configure(ErrorHandler handler) {
        if (handler instanceof ErrorHandlerSupport) {
            ErrorHandlerSupport handlerSupport = (ErrorHandlerSupport) handler;

            for (OnExceptionDefinition exception : exceptions) {
                handlerSupport.addExceptionPolicy(exception);
            }
        }
    }

    public List<OnExceptionDefinition> getErrorHandlers() {
        return exceptions;
    }

    public void setErrorHandlers(List<OnExceptionDefinition> exceptions) {
        this.exceptions.clear();
        this.exceptions.addAll(exceptions);
    }

    /**
     * Sets the exception policy to use
     */
    public ErrorHandlerBuilderSupport exceptionPolicyStrategy(ExceptionPolicyStrategy exceptionPolicyStrategy) {
        setExceptionPolicyStrategy(exceptionPolicyStrategy);
        return this;
    }

    public ExceptionPolicyStrategy getExceptionPolicyStrategy() {
        return exceptionPolicyStrategy;
    }

    public void setExceptionPolicyStrategy(ExceptionPolicyStrategy exceptionPolicyStrategy) {
        ObjectHelper.notNull(exceptionPolicyStrategy, "ExceptionPolicyStrategy");
        this.exceptionPolicyStrategy = exceptionPolicyStrategy;
    }
}