Example usage for org.apache.commons.functor.core.collection FilteredIterable of

Introduction

In this page you can find the example usage for org.apache.commons.functor.core.collection FilteredIterable of.

Prototype

public static <T> FilteredIterable<T> of(Iterable<T> iterable) 

Source Link

Document

Get a FilteredIterable of iterable.

Usage

From source file:therian.OperatorsTest.java

@Test
public void testSupporting() {
    @SuppressWarnings("unchecked")
    final List<Surgeon<? extends Surgery>> surgeons = Arrays.asList(new Surgeon<Appendectomy>() {
    }, new Surgeon<Tonsillectomy>() {
    });/*from w w w. ja  v a2  s.com*/
    assertEquals(1, IteratorToGeneratorAdapter
            .adapt(FilteredIterable.of(surgeons).retain(Operators.supporting(new Appendectomy())).iterator())
            .toCollection().size());
    assertEquals(1, IteratorToGeneratorAdapter
            .adapt(FilteredIterable.of(surgeons).retain(Operators.supporting(new Tonsillectomy())).iterator())
            .toCollection().size());
}

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From source file:therian.TherianContext.java

/**
 * Performs the specified operation by invoking any compatible operator until the operation is marked as successful,
 * then returns the result./* www  .  j  a v a  2s . c  o m*/
 * 
 * @param operation
 * @param <RESULT>
 * @param <OPERATION>
 * @return result if available
 * @throws IllegalArgumentException
 *             if no operators are successful
 */
public final synchronized <RESULT, OPERATION extends Operation<RESULT>> RESULT eval(OPERATION operation) {
    final TherianContext originalContext = getCurrentInstance();
    if (originalContext != this) {
        CURRENT_INSTANCE.set(this);
    }
    try {
        if (operations.contains(operation)) {
            // TODO handle better, e.g. copy of recursive graph
            throw new OperationException(operation, "recursive operation detected");
        }
        operations.push(operation);

        try {
            operation.init();
            if (!operation.isSuccessful()) {
                for (Operator<?> operator : FilteredIterable.of(getTypedContext(Therian.class).getOperators())
                        .retain(Operators.supporting(operation))) {
                    // already determined that operator supports operation:
                    evalRaw(operation, operator);
                    if (operation.isSuccessful()) {
                        break;
                    }
                }
            }
            return operation.getResult();
        } finally {
            final Operation<?> opOnPop = operations.pop();
            Validate.validState(opOnPop == operation,
                    "operation stack out of whack; found %s where %s was expected", opOnPop, operation);
        }
    } finally {
        // javadoc not clear on whether set(null) is truly equivalent to
        // remove():
        if (originalContext == null) {
            CURRENT_INSTANCE.remove();
        } else if (originalContext != this) {
            // restore original context in the unlikely event that multiple
            // contexts are being used on the same
            // thread:
            CURRENT_INSTANCE.set(originalContext);
        }
    }
}

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