net.sf.saxon.style.XSLSort Maven / Gradle / Ivy

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package net.sf.saxon.style;
import net.sf.saxon.expr.*;
import net.sf.saxon.instruct.Executable;
import net.sf.saxon.om.AttributeCollection;
import net.sf.saxon.om.Axis;
import net.sf.saxon.om.NamespaceConstant;
import net.sf.saxon.om.StandardNames;
import net.sf.saxon.sort.CodepointCollator;
import net.sf.saxon.sort.SortKeyDefinition;
import net.sf.saxon.sort.StringCollator;
import net.sf.saxon.trans.XPathException;
import net.sf.saxon.type.ItemType;
import net.sf.saxon.value.EmptySequence;
import net.sf.saxon.value.SequenceType;
import net.sf.saxon.value.StringValue;
import net.sf.saxon.value.Whitespace;

import java.net.URI;
import java.net.URISyntaxException;

/**
* An xsl:sort element in the stylesheet. 

*/

public class XSLSort extends StyleElement {

    private SortKeyDefinition sortKeyDefinition;
    private Expression select;
    private Expression order;
    private Expression dataType = null;
    private Expression caseOrder;
    private Expression lang;
    private Expression collationName;
    private Expression stable;
    private boolean useDefaultCollation = true;

    /**
      * Determine whether this type of element is allowed to contain a sequence constructor
      * @return true: yes, it may contain a sequence constructor
      */

    public boolean mayContainSequenceConstructor() {
        return true;
    }

    public void prepareAttributes() throws XPathException {

		AttributeCollection atts = getAttributeList();

		String selectAtt = null;
        String orderAtt = null;
        String dataTypeAtt = null;
        String caseOrderAtt = null;
        String langAtt = null;
        String collationAtt = null;
        String stableAtt = null;

		for (int a=0; a