Copyright (c) 2010, 2015 Broadcom Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
Broadcom Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2010, 2015 Broadcom Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 * Broadcom Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.internal.resources;

import java.util.Objects;
import org.eclipse.core.resources.IBuildConfiguration;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.PlatformObject;

Concrete implementation of a build configuration.

This class can both be used as a real build configuration in a project.
As well as the reference to a build configuration in another project.


When being used as a reference, core.resources must call getBuildConfig() to dereference the build configuration to the the actual build configuration on the referenced project. 
/**
 * Concrete implementation of a build configuration.
 *<p>
 * This class can both be used as a real build configuration in a project.
 * As well as the reference to a build configuration in another project.
 *</p>
 *<p>
 * When being used as a reference, core.resources <strong>must</strong> call
 * {@link #getBuildConfig()} to dereference the build configuration to the
 * the actual build configuration on the referenced project.
 *</p>
 */
public class BuildConfiguration extends PlatformObject implements IBuildConfiguration {

	
Project on which this build configuration is set /** Project on which this build configuration is set */
	private final IProject project;
	
Unique human readable name of the configuration in the project /** Unique human readable name of the configuration in the project */
	private final String name;

	public BuildConfiguration(IProject project) {
		this(project, IBuildConfiguration.DEFAULT_CONFIG_NAME);
	}

	public BuildConfiguration(IProject project, String configName) {
		this.project = project;
		this.name = configName;
	}

	
Returns:
the concrete build configuration referred to by this IBuildConfiguration
        when it's being used as a reference/**
	 * @return the concrete build configuration referred to by this IBuildConfiguration
	 *         when it's being used as a reference
	 */
	public IBuildConfiguration getBuildConfig() throws CoreException {
		return project.getBuildConfig(name);
	}

	@Override
	public String getName() {
		return name;
	}

	@Override
	public IProject getProject() {
		return project;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		BuildConfiguration other = (BuildConfiguration) obj;
		return Objects.equals(this.name, other.name) && Objects.equals(this.project, other.project);
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + Objects.hashCode(name);
		result = prime * result + Objects.hashCode(project);
		return result;
	}

	@Override
	public String toString() {
		StringBuilder result = new StringBuilder();
		if (project != null)
			result.append(project.getName());
		else
			result.append("?"); //$NON-NLS-1$
		result.append(";"); //$NON-NLS-1$
		if (name != null)
			result.append(" [").append(name).append(']'); //$NON-NLS-1$
		else
			result.append(" [active]"); //$NON-NLS-1$
		return result.toString();
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T getAdapter(Class<T> adapter) {
		if (adapter.isInstance(project))
			return (T) project;
		return super.getAdapter(adapter);
	}

}