diff options
Diffstat (limited to 'source/com/c2kernel/persistency/outcome/OutcomeValidator.java')
| -rwxr-xr-x | source/com/c2kernel/persistency/outcome/OutcomeValidator.java | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/source/com/c2kernel/persistency/outcome/OutcomeValidator.java b/source/com/c2kernel/persistency/outcome/OutcomeValidator.java new file mode 100755 index 0000000..1a76322 --- /dev/null +++ b/source/com/c2kernel/persistency/outcome/OutcomeValidator.java @@ -0,0 +1,183 @@ +
+package com.c2kernel.persistency.outcome;
+
+import java.io.IOException;
+import java.io.StringReader;
+
+import org.apache.xerces.parsers.DOMParser;
+import org.apache.xerces.parsers.IntegratedParserConfiguration;
+import org.apache.xerces.parsers.XMLGrammarPreparser;
+import org.apache.xerces.util.SymbolTable;
+import org.apache.xerces.util.XMLGrammarPoolImpl;
+import org.apache.xerces.xni.XNIException;
+import org.apache.xerces.xni.grammars.Grammar;
+import org.apache.xerces.xni.grammars.XMLGrammarDescription;
+import org.apache.xerces.xni.parser.XMLErrorHandler;
+import org.apache.xerces.xni.parser.XMLInputSource;
+import org.apache.xerces.xni.parser.XMLParseException;
+import org.apache.xerces.xni.parser.XMLParserConfiguration;
+import org.xml.sax.ErrorHandler;
+import org.xml.sax.SAXException;
+import org.xml.sax.SAXParseException;
+
+import com.c2kernel.common.InvalidDataException;
+import com.c2kernel.utils.Logger;
+
+/**************************************************************************
+ *
+ * $Revision: 1.24 $
+ * $Date: 2005/06/09 13:50:10 $
+ *
+ * Copyright (C) 2003 CERN - European Organization for Nuclear Research
+ * All rights reserved.
+ **************************************************************************/
+
+
+public class OutcomeValidator implements ErrorHandler, XMLErrorHandler {
+
+ protected static final String NAMESPACES_FEATURE_ID = "http://xml.org/sax/features/namespaces";
+ /** Validation feature id (http://xml.org/sax/features/validation). */
+ protected static final String VALIDATION_FEATURE_ID = "http://xml.org/sax/features/validation";
+ /** Schema validation feature id (http://apache.org/xml/features/validation/schema). */
+ protected static final String SCHEMA_VALIDATION_FEATURE_ID = "http://apache.org/xml/features/validation/schema";
+ /** Schema full checking feature id (http://apache.org/xml/features/validation/schema-full-checking). */
+ protected static final String SCHEMA_FULL_CHECKING_FEATURE_ID = "http://apache.org/xml/features/validation/schema-full-checking";
+ public static final String GRAMMAR_POOL = "http://apache.org/xml/properties/internal/grammar-pool";
+
+ static SchemaValidator schemaValid = new SchemaValidator();
+
+ Schema schema;
+ protected StringBuffer errors = null;
+ XMLGrammarPoolImpl schemaGrammarPool = new XMLGrammarPoolImpl(1);
+ SymbolTable sym = new SymbolTable();
+
+ public static OutcomeValidator getValidator(Schema schema) throws InvalidDataException {
+ String schemaId = schema.docType+"_"+schema.docVersion;
+
+ if (schemaId.equals("Schema_0"))
+ return schemaValid;
+
+ return new OutcomeValidator(schema);
+ }
+
+ protected OutcomeValidator() {
+ errors = new StringBuffer();
+ }
+
+ public OutcomeValidator(Schema schema) throws InvalidDataException {
+ this.schema = schema;
+
+ if (schema.docType.equals("Schema"))
+ throw new InvalidDataException("Use SchemaValidator to validate schema", "");
+
+ errors = new StringBuffer();
+ Logger.msg(5, "Parsing "+schema.docType+" version "+schema.docVersion+". "+schema.schema.length()+" chars");
+
+ XMLGrammarPreparser preparser = new XMLGrammarPreparser(sym);
+ preparser.registerPreparser(XMLGrammarDescription.XML_SCHEMA, null);
+ preparser.setProperty(GRAMMAR_POOL, schemaGrammarPool);
+
+ preparser.setFeature(NAMESPACES_FEATURE_ID, true);
+ preparser.setFeature(VALIDATION_FEATURE_ID, true);
+ preparser.setFeature(SCHEMA_VALIDATION_FEATURE_ID, true);
+ preparser.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, true);
+ preparser.setErrorHandler(this);
+ try {
+ Grammar g = preparser.preparseGrammar(XMLGrammarDescription.XML_SCHEMA, new XMLInputSource(null, null, null, new StringReader(schema.schema), null));
+ } catch (IOException ex) {
+ throw new InvalidDataException("Error parsing schema: "+ex.getMessage(), "");
+ }
+
+ if (errors.length() > 0) {
+ throw new InvalidDataException("Schema error: \n"+errors.toString(), "");
+ }
+
+ }
+
+ public synchronized String validate(Outcome outcome) {
+ if (outcome == null) return "Outcome object was null";
+ Logger.msg(5, "Validating outcome no "+outcome.getID()+" as "+schema.docType+" v"+schema.docVersion);
+ if (outcome.getSchemaType().equals(schema.docType)
+ && outcome.getSchemaVersion() == schema.docVersion) {
+ return validate(outcome.getData());
+ }
+ else
+ return "Outcome type and version did not match schema "+schema.docType;
+ }
+
+ public synchronized String validate(String outcome) {
+ if (outcome == null) return "Outcome String was null";
+ errors = new StringBuffer();
+ try {
+ XMLParserConfiguration parserConfiguration = new IntegratedParserConfiguration(sym, schemaGrammarPool);
+ parserConfiguration.setFeature(NAMESPACES_FEATURE_ID, true);
+ parserConfiguration.setFeature(VALIDATION_FEATURE_ID, true);
+ // now we can still do schema features just in case,
+ // so long as it's our configuraiton......
+ parserConfiguration.setFeature(SCHEMA_VALIDATION_FEATURE_ID, true);
+ parserConfiguration.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, true);
+ DOMParser parser = new DOMParser(parserConfiguration);
+ parser.setErrorHandler(this);
+
+ parser.parse(new XMLInputSource(null, null, null, new StringReader(outcome), null));
+ } catch (Exception e) {
+ return e.getMessage();
+ }
+ return errors.toString();
+ }
+
+ private void appendError(String level, Exception ex) {
+ errors.append(level);
+ String message = ex.getMessage();
+ if (message == null || message.length()==0)
+ message = ex.getClass().getName();
+ errors.append(message);
+ errors.append("\n");
+ }
+
+ /**
+ * ErrorHandler for instances
+ */
+ public void error(SAXParseException ex) throws SAXException {
+ appendError("ERROR: ", ex);
+ }
+
+ /**
+ *
+ */
+ public void fatalError(SAXParseException ex) throws SAXException {
+ appendError("FATAL: ", ex);
+ }
+
+ /**
+ *
+ */
+ public void warning(SAXParseException ex) throws SAXException {
+ appendError("WARNING: ", ex);
+ }
+
+ /**
+ * XMLErrorHandler for schema
+ */
+ public void error(String domain, String key, XMLParseException ex)
+ throws XNIException {
+ appendError("ERROR: ", ex);
+ }
+
+ /**
+ *
+ */
+ public void fatalError(String domain, String key, XMLParseException ex)
+ throws XNIException {
+ appendError("FATAL: ", ex);
+ }
+
+ /**
+ *
+ */
+ public void warning(String domain, String key, XMLParseException ex)
+ throws XNIException {
+ appendError("WARNING: ", ex);
+ }
+
+}
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