package net.sf.saxon.style;
import net.sf.saxon.Configuration;
import net.sf.saxon.PreparedStylesheet;
import net.sf.saxon.value.Whitespace;
import net.sf.saxon.trans.XPathException;
import net.sf.saxon.trans.SaxonErrorCode;
import net.sf.saxon.event.PipelineConfiguration;
import net.sf.saxon.expr.Expression;
import net.sf.saxon.instruct.Executable;
import net.sf.saxon.om.*;
import net.sf.saxon.type.SchemaException;
import javax.xml.transform.TransformerConfigurationException;
/**
* Compile-time representation of an xsl:import-schema declaration
* in a stylesheet
*/
public class XSLImportSchema extends StyleElement {
public void prepareAttributes() throws XPathException {
AttributeCollection atts = getAttributeList();
String namespace = null;
for (int a=0; a<atts.getLength(); a++) {
int nc = atts.getNameCode(a);
String f = getNamePool().getClarkName(nc);
if (f.equals(StandardNames.SCHEMA_LOCATION)) {
//
} else if (f.equals(StandardNames.NAMESPACE)) {
namespace = Whitespace.trim(atts.getValue(a));
} else {
checkUnknownAttribute(nc);
}
}
if ("".equals(namespace)) {
compileError("The zero-length string is not a valid namespace URI. "+
"For a schema with no namespace, omit the namespace attribute");
}
}
public void validate() throws XPathException {
checkTopLevel(null);
}
protected void index(XSLStylesheet top) throws XPathException {
try {
readSchema();
} catch (SchemaException e) {
throw XPathException.makeXPathException(e);
}
}
private void readSchema() throws SchemaException, XPathException {
try {
String schemaLoc = Whitespace.trim(getAttributeValue("", StandardNames.SCHEMA_LOCATION));
String namespace = Whitespace.trim(getAttributeValue("", StandardNames.NAMESPACE));
if (namespace==null) {
namespace = "";
} else {
namespace = namespace.trim();
}
PreparedStylesheet preparedStylesheet = getPreparedStylesheet();
Configuration config = preparedStylesheet.getConfiguration();
if (!config.isLicensedFeature(Configuration.LicenseFeature.SCHEMA_AWARE_XSLT)) {
compileError("To use xsl:import-schema, you need the schema-aware " +
"version of Saxon from http://www.saxonica.com/", "XTSE1650");
return;
}
AxisIterator kids = iterateAxis(Axis.CHILD);
NodeInfo inlineSchema = null;
while (true) {
Item child = kids.next();
if (child==null) {
break;
}
if (inlineSchema != null) {
compileError(getDisplayName() + " must not have more than one child element");
}
inlineSchema = (NodeInfo)child;
if (inlineSchema.getFingerprint() != StandardNames.XS_SCHEMA) {
compileError("The only child element permitted for " + getDisplayName() + " is xs:schema");
}
if (schemaLoc != null) {
compileError("The schema-location attribute must be absent if an inline schema is present");
}
namespace = config.readInlineSchema(inlineSchema, namespace,
preparedStylesheet.getCompilerInfo().getErrorListener());
getPrincipalStylesheet().addImportedSchema(namespace);
}
if (inlineSchema != null) {
return;
}
if (!config.isSchemaAvailable(namespace)) {
if (schemaLoc == null) {
compileWarning("No schema for this namespace is known, " +
"and no schema-location was supplied, so no schema has been imported",
SaxonErrorCode.SXWN9006);
return;
}
PipelineConfiguration pipe = config.makePipelineConfiguration();
namespace = config.readSchema(pipe, getBaseURI(), schemaLoc, namespace);
}
getPrincipalStylesheet().addImportedSchema(namespace);
} catch (SchemaException err) {
compileError(err.getMessage(), "XTSE0220");
} catch (TransformerConfigurationException err) {
compileError(err.getMessage(), "XTSE0220");
}
}
public Expression compile(Executable exec) throws XPathException {
exec.setReasonUnableToCompile("Cannot compile a stylesheet that imports a schema");
return null;
// No action. The effect of import-schema is compile-time only
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
// you may not use this file except in compliance with the License. You may obtain a copy of the
// License at http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is Michael H. Kay.
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Contributor(s): none.
//