Examples with ICompilerFactory org.codehaus.commons.compiler.ICompilerFactory used on opensource projects

Example 1 with ICompilerFactory

use of org.codehaus.commons.compiler.ICompilerFactory in project calcite by apache.

the class JaninoRelMetadataProvider method compile.

static <M extends Metadata> MetadataHandler<M> compile(String className, String classBody, MetadataDef<M> def, List<Object> argList) throws CompileException, IOException {
    final ICompilerFactory compilerFactory;
    try {
        compilerFactory = CompilerFactoryFactory.getDefaultCompilerFactory();
    } catch (Exception e) {
        throw new IllegalStateException("Unable to instantiate java compiler", e);
    }
    final ISimpleCompiler compiler = compilerFactory.newSimpleCompiler();
    compiler.setParentClassLoader(JaninoRexCompiler.class.getClassLoader());
    final String s = "public final class " + className + " implements " + def.handlerClass.getCanonicalName() + " {\n" + classBody + "\n" + "}";
    if (CalcitePrepareImpl.DEBUG) {
        // Add line numbers to the generated janino class
        compiler.setDebuggingInformation(true, true, true);
        System.out.println(s);
    }
    compiler.cook(s);
    final Constructor constructor;
    final Object o;
    try {
        constructor = compiler.getClassLoader().loadClass(className).getDeclaredConstructors()[0];
        o = constructor.newInstance(argList.toArray());
    } catch (InstantiationException | IllegalAccessException | InvocationTargetException | ClassNotFoundException e) {
        throw new RuntimeException(e);
    }
    return def.handlerClass.cast(o);
}

Example 2 with ICompilerFactory

use of org.codehaus.commons.compiler.ICompilerFactory in project calcite by apache.

the class EnumerableInterpretable method getBindable.

static Bindable getBindable(ClassDeclaration expr, String s, int fieldCount) throws CompileException, IOException {
    ICompilerFactory compilerFactory;
    try {
        compilerFactory = CompilerFactoryFactory.getDefaultCompilerFactory();
    } catch (Exception e) {
        throw new IllegalStateException("Unable to instantiate java compiler", e);
    }
    IClassBodyEvaluator cbe = compilerFactory.newClassBodyEvaluator();
    cbe.setClassName(expr.name);
    cbe.setExtendedClass(Utilities.class);
    cbe.setImplementedInterfaces(fieldCount == 1 ? new Class[] { Bindable.class, Typed.class } : new Class[] { ArrayBindable.class });
    cbe.setParentClassLoader(EnumerableInterpretable.class.getClassLoader());
    if (CalcitePrepareImpl.DEBUG) {
        // Add line numbers to the generated janino class
        cbe.setDebuggingInformation(true, true, true);
    }
    return (Bindable) cbe.createInstance(new StringReader(s));
}

Example 3 with ICompilerFactory

use of org.codehaus.commons.compiler.ICompilerFactory in project samza by apache.

the class RexToJavaCompiler method getExpression.

/**
 * Creates the instance of the class defined in {@link ClassDeclaration}
 * @param expr Interface whose instance needs to be created.
 * @param s The java code that implements the interface which should be used to create the instance.
 * @return The object of the class which implements the interface {@link Expression} with the code that is passed as input.
 * @throws CompileException
 * @throws IOException
 */
static Expression getExpression(ClassDeclaration expr, String s) throws CompileException, IOException {
    ICompilerFactory compilerFactory;
    try {
        compilerFactory = CompilerFactoryFactory.getDefaultCompilerFactory();
    } catch (Exception e) {
        throw new IllegalStateException("Unable to instantiate java compiler", e);
    }
    IClassBodyEvaluator cbe = compilerFactory.newClassBodyEvaluator();
    cbe.setClassName(expr.name);
    cbe.setImplementedInterfaces(expr.implemented.toArray(new Class[expr.implemented.size()]));
    cbe.setParentClassLoader(RexToJavaCompiler.class.getClassLoader());
    cbe.setDebuggingInformation(true, true, true);
    return (org.apache.samza.sql.data.Expression) cbe.createInstance(new StringReader(s));
}

Example 4 with ICompilerFactory

use of org.codehaus.commons.compiler.ICompilerFactory in project calcite by apache.

the class JaninoRexCompiler method getScalar.

static Scalar getScalar(ClassDeclaration expr, String s) throws CompileException, IOException {
    ICompilerFactory compilerFactory;
    try {
        compilerFactory = CompilerFactoryFactory.getDefaultCompilerFactory();
    } catch (Exception e) {
        throw new IllegalStateException("Unable to instantiate java compiler", e);
    }
    IClassBodyEvaluator cbe = compilerFactory.newClassBodyEvaluator();
    cbe.setClassName(expr.name);
    cbe.setImplementedInterfaces(new Class[] { Scalar.class });
    cbe.setParentClassLoader(JaninoRexCompiler.class.getClassLoader());
    if (CalcitePrepareImpl.DEBUG) {
        // Add line numbers to the generated janino class
        cbe.setDebuggingInformation(true, true, true);
    }
    return (Scalar) cbe.createInstance(new StringReader(s));
}