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/*******************************************************************************
* Copyright (c) 2004, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Rob Harrop - SpringSource Inc. (bug 247522)
*******************************************************************************/
package org.eclipse.osgi.internal.resolver;
import java.util.*;
import java.util.Map.Entry;
import org.eclipse.osgi.service.resolver.BaseDescription;
import org.eclipse.osgi.service.resolver.extras.DescriptionReference;
import org.osgi.framework.Version;
import org.osgi.framework.wiring.BundleCapability;
import org.osgi.framework.wiring.BundleRevision;
public abstract class BaseDescriptionImpl implements BaseDescription {
protected final Object monitor = new Object();
private volatile String name;
private volatile Version version;
private volatile Object userObject;
public String getName() {
return name;
}
public Version getVersion() {
synchronized (this.monitor) {
if (version == null)
return Version.emptyVersion;
return version;
}
}
protected void setName(String name) {
this.name = name;
}
protected void setVersion(Version version) {
this.version = version;
}
static <V> String toString(Map<String, V> map, boolean directives) {
if (map.size() == 0)
return ""; //$NON-NLS-1$
String assignment = directives ? ":=" : "="; //$NON-NLS-1$//$NON-NLS-2$
Set<Entry<String, V>> set = map.entrySet();
StringBuffer sb = new StringBuffer();
for (Entry<String, V> entry : set) {
sb.append("; "); //$NON-NLS-1$
String key = entry.getKey();
Object value = entry.getValue();
if (value instanceof List) {
@SuppressWarnings("unchecked")
List<Object> list = (List<Object>) value;
if (list.size() == 0)
continue;
Object component = list.get(0);
String className = component.getClass().getName();
String type = className.substring(className.lastIndexOf('.') + 1);
sb.append(key).append(':').append("List<").append(type).append(">").append(assignment).append('"'); //$NON-NLS-1$ //$NON-NLS-2$
for (Object object : list)
sb.append(object).append(',');
sb.setLength(sb.length() - 1);
sb.append('"');
} else {
String type = ""; //$NON-NLS-1$
if (!(value instanceof String)) {
String className = value.getClass().getName();
type = ":" + className.substring(className.lastIndexOf('.') + 1); //$NON-NLS-1$
}
sb.append(key).append(type).append(assignment).append('"').append(value).append('"');
}
}
return sb.toString();
}
String getInternalNameSpace() {
return null;
}
public BaseDescription getFragmentDeclaration() {
return null;
}
public BundleCapability getCapability() {
return getCapability(null);
}
BundleCapability getCapability(String namespace) {
BaseDescriptionImpl fragmentDeclaration = (BaseDescriptionImpl) getFragmentDeclaration();
if (fragmentDeclaration != null)
return fragmentDeclaration.getCapability(namespace);
if (namespace == null)
namespace = getInternalNameSpace();
if (namespace == null)
return null;
return new BaseCapability(namespace);
}
public Object getUserObject() {
return userObject;
}
public void setUserObject(Object userObject) {
this.userObject = userObject;
}
class BaseCapability implements BundleCapability, DescriptionReference {
private final String namespace;
public BaseCapability(String namespace) {
super();
this.namespace = namespace;
}
public BundleRevision getRevision() {
return getSupplier();
}
public String getNamespace() {
return namespace;
}
public Map<String, String> getDirectives() {
return getDeclaredDirectives();
}
public Map<String, Object> getAttributes() {
Map<String, Object> attrs = getDeclaredAttributes();
String internalName = BaseDescriptionImpl.this.getInternalNameSpace();
if (namespace.equals(internalName))
return attrs;
// we are doing an alias, must remove internal Name and add alias
attrs = new HashMap<String, Object>(attrs);
Object nameValue = attrs.remove(internalName);
if (nameValue != null)
attrs.put(namespace, nameValue);
return Collections.unmodifiableMap(attrs);
}
public int hashCode() {
return System.identityHashCode(BaseDescriptionImpl.this);
}
protected BaseDescriptionImpl getBaseDescription() {
return BaseDescriptionImpl.this;
}
public boolean equals(Object obj) {
if (this == obj)
return true;
if (!(obj instanceof BaseCapability))
return false;
return (((BaseCapability) obj).getBaseDescription() == BaseDescriptionImpl.this) && namespace.equals(((BaseCapability) obj).getNamespace());
}
public String toString() {
return getNamespace() + BaseDescriptionImpl.toString(getAttributes(), false) + BaseDescriptionImpl.toString(getDirectives(), true);
}
public BundleRevision getResource() {
return getRevision();
}
public BaseDescription getDescription() {
return BaseDescriptionImpl.this;
}
}
}
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