/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.felix.bundlerepository.impl;
import java.util.Collections;
import java.util.Map;
import java.util.regex.Pattern;
import org.apache.felix.bundlerepository.Capability;
import org.apache.felix.bundlerepository.Requirement;
import org.apache.felix.utils.filter.FilterImpl;
import org.osgi.framework.InvalidSyntaxException;
public class RequirementImpl implements Requirement
{
private static final Pattern REMOVE_LT = Pattern.compile("\\(([^<>=~()]*)<([^*=]([^\\\\\\*\\(\\)]|\\\\|\\*|\\(|\\))*)\\)");
private static final Pattern REMOVE_GT = Pattern.compile("\\(([^<>=~()]*)>([^*=]([^\\\\\\*\\(\\)]|\\\\|\\*|\\(|\\))*)\\)");
private static final Pattern REMOVE_NV = Pattern.compile("\\(version>=0.0.0\\)");
private String m_name = null;
private boolean m_extend = false;
private boolean m_multiple = false;
private boolean m_optional = false;
private FilterImpl m_filter = null;
private String m_comment = null;
private Map<String, Object> m_attributes = Collections.emptyMap();
private Map<String, String> m_directives = Collections.emptyMap();
public RequirementImpl()
{
}
public RequirementImpl(String name)
{
setName(name);
}
public Map<String, Object> getAttributes()
{
return m_attributes;
}
public void setAttributes(Map<String, Object> attributes) {
m_attributes = Collections.unmodifiableMap(attributes);
}
public Map<String, String> getDirectives()
{
return m_directives;
}
public void setDirectives(Map<String, String> directives)
{
m_directives = Collections.unmodifiableMap(directives);
}
public String getName()
{
return m_name;
}
public void setName(String name)
{
// Name of capabilities and requirements are interned for performances
// (with a very low memory consumption as there are only a handful of values)
m_name = name.intern();
}
public String getFilter()
{
return m_filter.toString();
}
public void setFilter(String filter)
{
try
{
String nf = REMOVE_LT.matcher(filter).replaceAll("(!($1>=$2))");
nf = REMOVE_GT.matcher(nf).replaceAll("(!($1<=$2))");
nf = REMOVE_NV.matcher(nf).replaceAll("");
m_filter = FilterImpl.newInstance(nf, true);
}
catch (InvalidSyntaxException e)
{
IllegalArgumentException ex = new IllegalArgumentException();
ex.initCause(e);
throw ex;
}
}
public boolean isSatisfied(Capability capability)
{
return m_name.equals(capability.getName()) && m_filter.matchCase(capability.getPropertiesAsMap())
&& (m_filter.toString().indexOf("(mandatory:<*") >= 0 || capability.getPropertiesAsMap().get("mandatory:") == null);
}
public boolean isExtend()
{
return m_extend;
}
public void setExtend(boolean extend)
{
m_extend = extend;
}
public boolean isMultiple()
{
return m_multiple;
}
public void setMultiple(boolean multiple)
{
m_multiple = multiple;
}
public boolean isOptional()
{
return m_optional;
}
public void setOptional(boolean optional)
{
m_optional = optional;
}
public String getComment()
{
return m_comment;
}
public void addText(String s)
{
m_comment = s;
}
public boolean equals(Object o)
{
if (this == o)
{
return true;
}
if (o instanceof Requirement)
{
Requirement r = (Requirement) o;
return m_name.equals(r.getName()) &&
(m_optional == r.isOptional()) &&
(m_multiple == r.isMultiple()) &&
m_filter.toString().equals(r.getFilter()) &&
((m_comment == r.getComment()) ||
((m_comment != null) && (m_comment.equals(r.getComment()))));
}
return false;
}
public int hashCode()
{
return m_filter.toString().hashCode();
}
public String toString()
{
return m_name + ":" + getFilter();
}
}