com.dotosoft.dot4command.commands.FilterCollectionCommand.java Source code

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Here is the source code for com.dotosoft.dot4command.commands.FilterCollectionCommand.java

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/*
   Copyright 2015 Denis Prasetio
       
   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 com.dotosoft.dot4command.commands;

import java.util.Collection;
import java.util.Map;

import org.apache.commons.beanutils.BeanPropertyValueEqualsPredicate;
import org.apache.commons.collections.CollectionUtils;

import com.dotosoft.dot4command.base.CommandBase;
import com.dotosoft.dot4command.chain.Processing;

public class FilterCollectionCommand<K extends String, V extends Object, C extends Map<K, V>>
        extends CommandBase<K, V, C> {

    private String fromKey;
    private String toKey;
    private String filterExpression;
    private String filterValue;

    @Override
    public Processing onExecute(C context) {

        Collection dataCollection = (Collection) getProperty(context, fromKey);
        BeanPropertyValueEqualsPredicate predicate = new BeanPropertyValueEqualsPredicate(filterExpression,
                filterValue);
        CollectionUtils.filter(dataCollection, predicate);

        if (dataCollection.isEmpty()) {
            context.remove(toKey);
        } else {
            context.put((K) toKey, (V) dataCollection);
        }

        return Processing.FINISHED;
    }

    public void setFromKey(String fromKey) {
        this.fromKey = fromKey;
    }

    public String getFromKey() {
        return fromKey;
    }

    public void setToKey(String toKey) {
        this.toKey = toKey;
    }

    public String getToKey() {
        return toKey;
    }

    public void setFilterExpression(String filterExpression) {
        this.filterExpression = filterExpression;
    }

    public String getFilterExpression() {
        return filterExpression;
    }

    public void setFilterValue(String filterValue) {
        this.filterValue = filterValue;
    }

    public String getFilterValue() {
        return filterValue;
    }
}