org.daisy.common.xproc.calabash.impl.DynamicXProcConfiguration Maven / Gradle / Ivy

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package org.daisy.common.xproc.calabash.impl;

import org.daisy.common.xproc.calabash.XProcStepRegistry;

import net.sf.saxon.s9api.Processor;
import net.sf.saxon.s9api.QName;

import com.xmlcalabash.core.XProcConfiguration;
import com.xmlcalabash.core.XProcRuntime;
import com.xmlcalabash.core.XProcStep;
import com.xmlcalabash.runtime.XAtomicStep;


/**
 * This class allows to add new steps dynamically to calabash.
 */
public class DynamicXProcConfiguration extends XProcConfiguration {

	/** The step registry. */
	XProcStepRegistry stepRegistry;

	/**
	 * Instantiates a new dynamic x proc configuration which holds the given step registry.
	 *
	 * @param stepRegistry the step registry
	 */
	public DynamicXProcConfiguration(XProcStepRegistry stepRegistry) {
		super();
		this.stepRegistry = stepRegistry;
	}

	/**
	 * Instantiates a new dynamic x proc configuration.
	 *
	 * @param schemaAware the schema aware
	 * @param stepRegistry the step registry
	 */
	public DynamicXProcConfiguration(boolean schemaAware,
			XProcStepRegistry stepRegistry) {
		super(schemaAware);
		this.stepRegistry = stepRegistry;
	}

	/**
	 * Instantiates a new dynamic x proc configuration.
	 *
	 * @param processor the processor
	 * @param stepRegistry the step registry
	 */
	public DynamicXProcConfiguration(Processor processor,
			XProcStepRegistry stepRegistry) {
		super(processor);
		this.stepRegistry = stepRegistry;
	}


	/* (non-Javadoc)
	 * @see com.xmlcalabash.core.XProcConfiguration#isStepAvailable(net.sf.saxon.s9api.QName)
	 */
	@Override
	public boolean isStepAvailable(QName type) {
		return stepRegistry.hasStep(type) || super.isStepAvailable(type);
	}


	/* (non-Javadoc)
	 * @see com.xmlcalabash.core.XProcConfiguration#newStep(com.xmlcalabash.core.XProcRuntime, com.xmlcalabash.runtime.XAtomicStep)
	 */
	@Override
	public XProcStep newStep(XProcRuntime runtime, XAtomicStep step) {

		if (step == null) {
			return null;
		} else {
			XProcStep xprocStep = stepRegistry.newStep(step.getType(), runtime,
					step);
			return (xprocStep != null) ? xprocStep : super.newStep(runtime,
					step);
		}
	}

}