Package org.apache.felix.sigil.common.core.internal.model.osgi

Source Code of org.apache.felix.sigil.common.core.internal.model.osgi.PackageExport

/*
* 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.sigil.common.core.internal.model.osgi;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;

import org.apache.felix.sigil.common.model.AbstractModelElement;
import org.apache.felix.sigil.common.model.eclipse.ISigilBundle;
import org.apache.felix.sigil.common.model.osgi.IPackageExport;
import org.osgi.framework.Version;

public class PackageExport extends AbstractModelElement implements IPackageExport
{

    private static final long serialVersionUID = 1L;

    private String name;
    private Version version;
    private String[] uses = new String[0];

    public PackageExport()
    {
        super("OSGi Package Export");
    }

    public String getPackageName()
    {
        return name;
    }

    public void setPackageName(String packageName)
    {
        this.name = packageName;
    }

    public Version getVersion()
    {
        Version result;
        if (version != null)
        {
            result = version;
        }
        else
        {
            ISigilBundle owningBundle = getAncestor(ISigilBundle.class);
            if (owningBundle == null)
            {
                result = Version.emptyVersion;
            }
            else
            {
                result = owningBundle.getVersion();
            }
        }
        return result;
    }

    public Version getRawVersion()
    {
        return version;
    }

    public void setVersion(Version version)
    {
        this.version = version; // == null ? Version.emptyVersion : version;
    }

    public void addUse(String use)
    {
        ArrayList<String> tmp = new ArrayList<String>(getUses());
        tmp.add(use);
        uses = tmp.toArray(new String[tmp.size()]);
    }

    public Collection<String> getUses()
    {
        return Arrays.asList(uses);
    }

    public void removeUse(String use)
    {
        ArrayList<String> tmp = new ArrayList<String>(getUses());
        tmp.remove(use);
        uses = tmp.toArray(new String[tmp.size()]);
    }

    @Override
    public String toString()
    {
        return "PackageExport[" + name + ":" + version + ":uses=" + uses + "]";
    }

    public void setUses(Collection<String> uses)
    {
        ArrayList<String> tmp = new ArrayList<String>(uses);
        this.uses = tmp.toArray(new String[tmp.size()]);
    }

    public int compareTo(IPackageExport o)
    {
        int i = name.compareTo(o.getPackageName());

        if (i == 0)
        {
            i = compareVersion(o.getVersion());
        }

        return i;
    }

    private int compareVersion(Version other)
    {
        if (version == null)
        {
            if (other == null)
            {
                return 0;
            }
            else
            {
                return 1;
            }
        }
        else
        {
            if (other == null)
            {
                return -1;
            }
            else
            {
                return version.compareTo(other);
            }
        }
    }

    @Override
    public boolean equals(Object obj)
    {
        if (obj == this)
            return true;
        if (obj == null)
            return false;

        if (obj instanceof PackageExport)
        {
            PackageExport e = (PackageExport) obj;
            return (name == null ? e.name == null : name.equals(e.name))
                && (version == null ? e.version == null : version.equals(e.version));
        }
        else
        {
            return false;
        }
    }

    @Override
    public int hashCode()
    {
        int hc = name.hashCode();

        if (version != null)
            hc *= version.hashCode();

        return hc;
    }
}
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