och.service.props.impl.MultiProps.java Source code

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Here is the source code for och.service.props.impl.MultiProps.java

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/*
 * Copyright 2015 Evgeny Dolganov (evgenij.dolganov@gmail.com).
 *
 * 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 och.service.props.impl;

import static och.util.Util.*;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArrayList;

import och.api.exception.PropertyNotFoundException;
import och.service.props.KeyWithDef;
import och.service.props.Props;
import och.service.props.PropsChangedListener;

import org.apache.commons.logging.Log;

public class MultiProps implements Props {

    private static Log log = getLog(MultiProps.class);

    private ArrayList<Props> list = new ArrayList<Props>();
    private CopyOnWriteArrayList<PropsChangedListener> listeners = new CopyOnWriteArrayList<>();

    public MultiProps() {
    }

    public MultiProps(Collection<? extends Props> sources) {
        for (Props source : sources)
            add(source);
        log.info("added sources: " + sources);
    }

    public MultiProps(Props... sources) {
        for (Props source : sources)
            add(source);
        log.info("added sources: " + Arrays.toString(sources));
    }

    public void addSource(Props source) {
        addSource(source, list.size());
    }

    public void addSource(Props source, int index) {
        add(source, index);
        log.info("added source: " + source + ", index=" + index);
    }

    private void add(Props source) {
        add(source, list.size());
    }

    private void add(Props source, int index) {
        list.add(index, source);
        source.addChangedListener((keys) -> fireChangedEvent(keys));
    }

    public void resetSources(Props... sources) {

        HashSet<String> keys = new HashSet<>();

        //remove old
        for (Props old : list) {
            keys.addAll(old.toMap().keySet());
        }
        list.clear();

        //add new
        for (Props source : sources) {
            addSource(source);
            keys.addAll(source.toMap().keySet());
        }

        fireChangedEvent(keys);
    }

    public int getSourceCount() {
        return list.size();
    }

    @Override
    public void addChangedListener(PropsChangedListener l) {
        listeners.add(l);
    }

    private void fireChangedEvent(Set<String> keys) {
        for (PropsChangedListener l : listeners) {
            l.onChanged(keys);
        }
    }

    @Override
    public String findVal(Object key) throws PropertyNotFoundException {
        for (Props source : list) {
            try {
                return source.findVal(key);
            } catch (PropertyNotFoundException e) {
            }
        }
        throw new PropertyNotFoundException(key);
    }

    @Override
    public String getVal(Object key) {
        for (Props source : list) {
            String result = source.getVal(key);
            if (result != null)
                return result;
        }
        return null;
    }

    @Override
    public String getVal(Object key, String defaultVal) {
        for (Props source : list) {
            String result = source.getVal(key);
            if (result != null)
                return result;
        }
        return defaultVal;
    }

    @Override
    public Integer getVal(Object key, Integer defaultVal) {
        for (Props source : list) {
            Integer result = source.getVal(key, (Integer) null);
            if (result != null)
                return result;
        }
        return defaultVal;
    }

    @Override
    public Long getVal(Object key, Long defaultVal) {
        for (Props source : list) {
            Long result = source.getVal(key, (Long) null);
            if (result != null)
                return result;
        }
        return defaultVal;
    }

    @Override
    public Boolean getVal(Object key, Boolean defaultVal) {
        for (Props source : list) {
            Boolean result = source.getVal(key, (Boolean) null);
            if (result != null)
                return result;
        }
        return defaultVal;
    }

    @Override
    public Double getVal(Object key, Double defaultVal) {
        for (Props source : list) {
            Double result = source.getVal(key, (Double) null);
            if (result != null)
                return result;
        }
        return defaultVal;
    }

    @Override
    public BigDecimal getVal(Object key, BigDecimal defaultVal) {
        for (Props source : list) {
            BigDecimal result = source.getVal(key, (BigDecimal) null);
            if (result != null)
                return result;
        }
        return defaultVal;
    }

    @Override
    public Class<?> getVal(Object key, Class<?> defaultVal) {
        for (Props source : list) {
            Class<?> result = source.getVal(key, (Class<?>) null);
            if (result != null)
                return result;
        }
        return defaultVal;
    }

    @Override
    public Map<String, String> toMap() {
        HashMap<String, String> out = new HashMap<>();
        for (int i = list.size() - 1; i > -1; i--) {
            out.putAll(list.get(i).toMap());
        }
        return out;
    }

    @Override
    public String getStrVal(KeyWithDef prop) {
        return getVal(prop, prop.strDefVal());
    }

    @Override
    public Integer getIntVal(KeyWithDef prop) {
        return getVal(prop, prop.intDefVal());
    }

    @Override
    public Long getLongVal(KeyWithDef prop) {
        return getVal(prop, prop.longDefVal());
    }

    @Override
    public Boolean getBoolVal(KeyWithDef prop) {
        return getVal(prop, prop.boolDefVal());
    }

    @Override
    public Double getDoubleVal(KeyWithDef prop) {
        return getVal(prop, prop.doubleDefVal());
    }

    @Override
    public BigDecimal getBigDecimalVal(KeyWithDef prop) {
        return getVal(prop, prop.bigDecimalDefVal());
    }

    @Override
    public String toString() {
        return "MultiProps [list=" + list + "]";
    }

}