Example usage for java.util Deque contains

Introduction

In this page you can find the example usage for java.util Deque contains.

Prototype

boolean contains(Object o);

Source Link

Document

Returns true if this deque contains the specified element.

Usage

From source file:org.polymap.core.data.pipeline.DefaultPipelineIncubator.java

protected boolean findTransformation(ProcessorDescription from, ProcessorDescription to, LayerUseCase usecase,
        Deque<ProcessorDescription> chain) {
    log.debug(StringUtils.repeat("    ", chain.size()) + "findTransformation: " + from + " => " + to + " -- "
            + usecase);//  w  w w  .  j  a  v a 2 s. c  o m

    // recursion break
    if (chain.size() > 16) {
        return false;
    }

    // recursion start
    if (from.getSignature().isCompatible(to.getSignature())) {
        chain.addLast(to);
        log.debug(StringUtils.repeat("    ", chain.size()) + "Transformation found: " + chain);
        return true;
    }

    // recursion step
    else {
        for (ProcessorDescription desc : allTransformers(usecase)) {
            if (from.getSignature().isCompatible(desc.getSignature()) && !chain.contains(desc)) {
                chain.addLast(desc);
                if (findTransformation(desc, to, usecase, chain)) {
                    //log.debug( "      transformation found: " + desc );
                    return true;
                }
                chain.removeLast();
            }
        }
        return false;
    }
}

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