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An XProc 1.0 processor

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package com.xmlcalabash.extensions;

import com.xmlcalabash.core.XMLCalabash;
import com.xmlcalabash.io.ReadablePipe;
import com.xmlcalabash.io.WritablePipe;
import com.xmlcalabash.core.XProcRuntime;

import net.sf.saxon.s9api.SaxonApiException;
import net.sf.saxon.s9api.XdmNode;
import net.sf.saxon.s9api.QName;
import com.xmlcalabash.runtime.XAtomicStep;
import com.xmlcalabash.library.DefaultStep;

import java.util.Vector;
import java.net.URI;

/**
 * Created by IntelliJ IDEA.
 * User: ndw
 * Date: Oct 8, 2008
 * Time: 7:44:07 AM
 * To change this template use File | Settings | File Templates.
 */

@XMLCalabash(
        name = "cx:collection-manager",
        type = "{http://xmlcalabash.com/ns/extensions}collection-manager")

public class CollectionManager extends DefaultStep {
    private static final QName _href = new QName("","href");
    private ReadablePipe source = null;
    private WritablePipe result = null;

    /*
     * Creates a new instance of CollectionManager
     */
    public CollectionManager(XProcRuntime runtime, XAtomicStep step) {
        super(runtime,step);
    }

    public void setInput(String port, ReadablePipe pipe) {
        source = pipe;
    }

    public void setOutput(String port, WritablePipe pipe) {
        result = pipe;
    }

    public void reset() {
        source.resetReader();
        result.resetWriter();
    }

    public void run() throws SaxonApiException {
        super.run();

        URI href = step.getNode().getBaseURI().resolve(getOption(_href).getString());

        Vector collection = new Vector ();
        while (source.moreDocuments()) {
            collection.add(source.read());
        }

        if (collection.size() == 0) {
            collection = runtime.getCollection(href);
        } else {
            runtime.setCollection(href, collection);
        }

        if (collection != null) {
            for (XdmNode doc : collection) {
                result.write(doc);
            }
        }
    }
}