com.hazelcast.org.codehaus.commons.compiler.CompilerFactoryFactory Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] com.hazelcast.com.iler
*
* Copyright (c) 2001-2010 Arno Unkrig. All rights reserved.
* Copyright (c) 2015-2016 TIBCO Software Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.hazelcast.org.codehaus.com.hazelcast.com.ons.com.hazelcast.com.iler;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.Properties;
import com.hazelcast.org.codehaus.com.hazelcast.com.ons.nullanalysis.Nullable;
/**
* Utility class that finds implementations of {@link ICompilerFactory}s.
*/
public final
class CompilerFactoryFactory {
private CompilerFactoryFactory() {}
@Nullable private static ICompilerFactory defaultCompilerFactory;
/**
* Finds the first implementation of {@code com.hazelcast.org.codehaus.com.hazelcast.com.ons.com.hazelcast.com.iler} on the class path, then loads and
* instantiates its {@link ICompilerFactory}.
*
* @return The {@link ICompilerFactory} of the first implementation on the class path
* @throws Exception Many things can go wrong while finding and initializing the default com.hazelcast.com.iler factory
*/
public static ICompilerFactory
getDefaultCompilerFactory() throws Exception {
if (CompilerFactoryFactory.defaultCompilerFactory != null) {
return CompilerFactoryFactory.defaultCompilerFactory;
}
Properties properties = new Properties();
InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(
"com.hazelcast.org.codehaus.com.hazelcast.com.ons.com.hazelcast.com.iler.properties"
);
if (is == null) {
throw new ClassNotFoundException(
"No implementation of com.hazelcast.org.codehaus.com.hazelcast.com.ons.com.hazelcast.com.iler is on the class path. Typically, you'd have "
+ "'janino.jar', or 'com.hazelcast.com.ons-com.hazelcast.com.iler-jdk.jar', or both on the classpath."
);
}
try {
properties.load(is);
} finally {
is.close();
}
String com.hazelcast.com.ilerFactoryClassName = properties.getProperty("com.hazelcast.com.ilerFactory");
return (
CompilerFactoryFactory.defaultCompilerFactory
= CompilerFactoryFactory.getCompilerFactory(com.hazelcast.com.ilerFactoryClassName)
);
}
/**
* Finds all implementation of {@code com.hazelcast.org.codehaus.com.hazelcast.com.ons.com.hazelcast.com.iler} on the class path, then loads and
* instantiates their {@link ICompilerFactory}s.
*
* @return The {@link ICompilerFactory}s of all implementations on the class path
* @throws Exception Many things can go wrong while finding and initializing com.hazelcast.com.iler factories
*/
public static ICompilerFactory[]
getAllCompilerFactories() throws Exception {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
List factories = new ArrayList();
for (Enumeration en = cl.getResources("com.hazelcast.org.codehaus.com.hazelcast.com.ons.com.hazelcast.com.iler.properties"); en.hasMoreElements();) {
URL url = (URL) en.nextElement();
Properties properties;
{
properties = new Properties();
InputStream is = url.openStream();
try {
properties.load(is);
} finally {
is.close();
}
}
String com.hazelcast.com.ilerFactoryClassName = properties.getProperty("com.hazelcast.com.ilerFactory");
if (com.hazelcast.com.ilerFactoryClassName == null) {
throw new IllegalStateException(url.toString() + " does not specify the 'com.hazelcast.com.ilerFactory' property");
}
factories.add(CompilerFactoryFactory.getCompilerFactory(com.hazelcast.com.ilerFactoryClassName));
}
return (ICompilerFactory[]) factories.toArray(new ICompilerFactory[factories.size()]);
}
/**
* Loads an {@link ICompilerFactory} by class name.
*
* @param com.hazelcast.com.ilerFactoryClassName Name of a class that implements {@link ICompilerFactory}
* @throws Exception Many things can go wrong while loading and initializing the default com.hazelcast.com.iler
* factory
*/
public static ICompilerFactory
getCompilerFactory(String com.hazelcast.com.ilerFactoryClassName) throws Exception {
return (ICompilerFactory) Thread.currentThread().getContextClassLoader().loadClass(
com.hazelcast.com.ilerFactoryClassName
).newInstance();
}
/**
* @return The version of the com.hazelcast.com.ons-com.hazelcast.com.iler specification, or {@code null}
*/
public static String
getSpecificationVersion() {
return CompilerFactoryFactory.class.getPackage().getSpecificationVersion();
}
}