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package org.picocontainer.defaults;
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import org.picocontainer.ComponentAdapter;
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import org.picocontainer.PicoInitializationException;
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import org.picocontainer.PicoIntrospectionException;
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import java.lang.reflect.Array;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.SortedMap;
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import java.util.SortedSet;
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import java.util.TreeMap;
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import java.util.TreeSet;
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class GenericCollectionComponentAdapter extends AbstractComponentAdapter {
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private final Class keyType;
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private final Class valueType;
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private final Class collectionType;
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private final Class collectionClass;
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public GenericCollectionComponentAdapter(Object componentKey, Class keyType, Class valueType, Class collectionType) {
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super(componentKey, HashMap.class);
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this.keyType = keyType;
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this.valueType = valueType;
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this.collectionType = collectionType;
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if (Array.class.isAssignableFrom(collectionType)) {
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collectionClass = Array.class;
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} else if (List.class.isAssignableFrom(collectionType)) {
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collectionClass = ArrayList.class;
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} else if (SortedSet.class.isAssignableFrom(collectionType)) {
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collectionClass = TreeSet.class;
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} else if (Set.class.isAssignableFrom(collectionType)) {
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collectionClass = HashSet.class;
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} else if (Collection.class.isAssignableFrom(collectionType)) {
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collectionClass = ArrayList.class;
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} else if (SortedMap.class.isAssignableFrom(collectionType)) {
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collectionClass = TreeMap.class;
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} else if (Map.class.isAssignableFrom(collectionType)) {
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collectionClass = HashMap.class;
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} else {
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throw new PicoIntrospectionException("Unsupported collection type: " + collectionType.getName());
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}
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}
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public Object getComponentInstance() throws PicoInitializationException, PicoIntrospectionException {
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List adaptersOfType = getContainer().getComponentAdaptersOfType(valueType);
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if (Array.class.isAssignableFrom(collectionType)) {
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return getArrayInstance(adaptersOfType);
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} else if (Map.class.isAssignableFrom(collectionType)) {
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return getMapInstance(adaptersOfType);
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} else {
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return getCollectionInstance(adaptersOfType);
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}
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}
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private Object[] getArrayInstance(List adaptersOfType) {
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Object[] result = (Object[]) Array.newInstance(valueType, adaptersOfType.size());
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int i = 0;
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for (Iterator iterator = adaptersOfType.iterator(); iterator.hasNext();) {
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ComponentAdapter componentAdapter = (ComponentAdapter) iterator.next();
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result[i] = componentAdapter.getComponentInstance();
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i++;
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}
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return result;
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}
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private Collection getCollectionInstance(List adaptersOfType) {
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try {
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Collection result = (Collection) collectionClass.newInstance();
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for (Iterator iterator = adaptersOfType.iterator(); iterator.hasNext();) {
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ComponentAdapter componentAdapter = (ComponentAdapter) iterator.next();
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result.add(componentAdapter.getComponentInstance());
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}
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return result;
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} catch (InstantiationException e) {
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throw new PicoInitializationException(e);
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} catch (IllegalAccessException e) {
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throw new PicoInitializationException(e);
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}
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}
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private Map getMapInstance(List adaptersOfType) {
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try {
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Map result = (Map) collectionClass.newInstance();
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for (Iterator iterator = adaptersOfType.iterator(); iterator.hasNext();) {
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ComponentAdapter componentAdapter = (ComponentAdapter) iterator.next();
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Object componentKey = componentAdapter.getComponentKey();
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if (keyType.isAssignableFrom(componentKey.getClass())) {
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result.put(componentKey, componentAdapter.getComponentInstance());
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}
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}
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return result;
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} catch (InstantiationException e) {
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throw new PicoInitializationException(e);
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} catch (IllegalAccessException e) {
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throw new PicoInitializationException(e);
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}
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}
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public void verify() throws UnsatisfiableDependenciesException {
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}
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}
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