package com.xmlcalabash.io;
import net.sf.saxon.s9api.XdmNode;
import java.util.Vector;
import com.xmlcalabash.core.XProcException;
import com.xmlcalabash.core.XProcRuntime;
import com.xmlcalabash.model.Log;
import com.xmlcalabash.util.S9apiUtils;
/**
* Created by IntelliJ IDEA.
* User: ndw
* Date: Oct 2, 2008
* Time: 6:56:32 AM
* To change this template use File | Settings | File Templates.
*/
public class DocumentSequence {
protected static final String logger = "com.xmlcalabash.io.documentsequence";
private XProcRuntime runtime = null;
private Vector<XdmNode> documents = new Vector<XdmNode>();
private boolean closed = false;
private static int idCounter = 0;
private int id = 0;
private PipeLogger outputlog = null;
private int readerCount = 0;
public DocumentSequence(XProcRuntime xproc) {
runtime = xproc;
id = idCounter++;
//runtime.finest(logger, null, "Created document-sequence #" + id);
}
public void addReader() {
readerCount++;
//System.err.println(this + ": " + readerCount);
}
public int getReaderCount() {
return readerCount;
}
public void setLogger(Log log) {
if (log != null) {
outputlog = new PipeLogger(runtime, log);
}
}
public void add(XdmNode document) {
if (closed) {
throw new XProcException("You can't add a document to a closed DocumentSequence.");
} else {
S9apiUtils.assertDocument(document);
//runtime.finest(logger, null, "Wrote " + (document == null ? "null" : document.getBaseURI()) + " to " + toString());
documents.add(document);
if (outputlog != null) {
outputlog.log(document);
}
}
}
public XdmNode get(int count) {
if (count < documents.size()) {
XdmNode doc = documents.get(count);
//runtime.finest(logger, null, "Read " + (doc == null ? "null" : doc.getBaseURI()) + " from " + toString());
return doc;
} else {
return null;
}
}
public void close() {
readerCount--;
closed = true;
if (outputlog != null) {
outputlog.stopLogging();
}
}
public boolean closed() {
return closed;
}
public int size() {
return documents.size();
}
public void reset() {
documents.clear();
closed = false;
if (outputlog != null) {
outputlog.stopLogging();
}
}
public String toString() {
return "[document-sequence #" + id + " (" + documents.size() + " docs)]";
}
}