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/*
 * Copyright 2011 the original author or authors.
 *
 * 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 org.gradle.api.internal;

import groovy.lang.Closure;
import org.gradle.api.DomainObjectSet;
import org.gradle.api.internal.collections.CollectionEventRegister;
import org.gradle.api.internal.collections.CollectionFilter;
import org.gradle.api.internal.collections.FilteredSet;
import org.gradle.api.specs.Spec;
import org.gradle.api.specs.Specs;

import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;

public class DefaultDomainObjectSet extends DefaultDomainObjectCollection implements DomainObjectSet {

    public DefaultDomainObjectSet(Class type) {
        this(type, new LinkedHashSet());
    }

    public DefaultDomainObjectSet(Class type, Collection store) {
        super(type, store);
    }

    protected DefaultDomainObjectSet(DefaultDomainObjectSet store, CollectionFilter filter) {
        this(filter.getType(), store.filteredStore(filter), store.filteredEvents(filter));
    }

    protected DefaultDomainObjectSet(Class type, Collection store, CollectionEventRegister eventRegister) {
        super(type, store, eventRegister);
    }

    @Override
    protected  DefaultDomainObjectSet filtered(CollectionFilter filter) {
        return new DefaultDomainObjectSet(this, filter);
    }

    @Override
    protected  Set filteredStore(CollectionFilter filter) {
        return new FilteredSet(this, filter);
    }

    @Override
    public  DomainObjectSet withType(Class type) {
        return filtered(createFilter(type));
    }

    @Override
    public DomainObjectSet matching(Spec spec) {
        return filtered(createFilter(spec));
    }

    @Override
    public DomainObjectSet matching(Closure spec) {
        return matching(Specs.convertClosureToSpec(spec));
    }

    @Override
    public Set findAll(Closure cl) {
        return findAll(cl, new LinkedHashSet());
    }

    @Override
    public Iterator iterator() {
        return new IteratorImpl(SetIterator.of(getStore()));
    }

}