diff options
Diffstat (limited to 'sandbox/scottkurz/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/FaultTransformHelper.java')
| -rwxr-xr-x | sandbox/scottkurz/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/FaultTransformHelper.java | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/sandbox/scottkurz/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/FaultTransformHelper.java b/sandbox/scottkurz/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/FaultTransformHelper.java new file mode 100755 index 0000000000..9c1a054d90 --- /dev/null +++ b/sandbox/scottkurz/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/FaultTransformHelper.java @@ -0,0 +1,166 @@ +package org.apache.tuscany.sca.core.databinding.wire;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.databinding.Mediator;
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
+import org.apache.tuscany.sca.interfacedef.util.FaultException;
+import org.apache.tuscany.sca.interfacedef.util.XMLType;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osoa.sca.ServiceRuntimeException;
+
+public class FaultTransformHelper {
+
+ private Mediator mediator;
+
+ public FaultTransformHelper(Mediator mediator) {
+ this.mediator = mediator;
+ }
+
+ public Object transformFault(Object result, Operation sourceOperation, Operation targetOperation, RuntimeWire wire) {
+
+ // FIXME: How to match fault data to a fault type for the
+ // operation?
+
+ // If the result is from an InvocationTargetException look at
+ // the actual cause.
+ if (result instanceof InvocationTargetException) {
+ result = ((InvocationTargetException)result).getCause();
+ }
+ DataType targetDataType = null;
+ for (DataType exType : targetOperation.getFaultTypes()) {
+ if (((Class)exType.getPhysical()).isInstance(result)) {
+ if (result instanceof FaultException) {
+ DataType faultType = (DataType)exType.getLogical();
+ if (((FaultException)result).isMatchingType(faultType.getLogical())) {
+ targetDataType = exType;
+ break;
+ }
+ } else {
+ targetDataType = exType;
+ break;
+ }
+ }
+ }
+
+ /*
+ if (targetDataType == null) {
+ // Not a business exception
+ return resultMsg;
+ }
+ */
+
+ DataType targetFaultType = getFaultType(targetDataType);
+ if (targetFaultType == null) {
+ // No matching fault type, it's a system exception
+ Throwable cause = (Throwable) result;
+ throw new ServiceRuntimeException(cause);
+ }
+
+ // FIXME: How to match a source fault type to a target fault
+ // type?
+ DataType sourceDataType = null;
+ DataType sourceFaultType = null;
+ for (DataType exType : sourceOperation.getFaultTypes()) {
+ DataType faultType = getFaultType(exType);
+ // Match by the QName (XSD element) of the fault type
+ if (faultType != null && typesMatch(targetFaultType.getLogical(), faultType.getLogical())) {
+ sourceDataType = exType;
+ sourceFaultType = faultType;
+ break;
+ }
+ }
+
+ if (sourceFaultType == null) {
+ // No matching fault type, it's a system exception
+ Throwable cause = (Throwable) result;
+ throw new ServiceRuntimeException(cause);
+ }
+
+ Map<String, Object> metadata = new HashMap<String, Object>();
+ metadata.put("source.operation", targetOperation);
+ metadata.put("target.operation", sourceOperation);
+ // When is the 'wire' used?
+ if (wire != null) {
+ metadata.put("wire", wire);
+ }
+
+ Object newResult =
+ transformException(result, targetDataType, sourceDataType, targetFaultType, sourceFaultType, metadata);
+
+ return newResult;
+
+ }
+
+ /**
+ * @param source The source exception
+ * @param sourceExType The data type for the source exception
+ * @param targetExType The data type for the target exception
+ * @param sourceType The fault type for the source
+ * @param targetType The fault type for the target
+ * @return
+ */
+ private Object transformException(Object source,
+ DataType sourceExType,
+ DataType targetExType,
+ DataType sourceType,
+ DataType targetType,
+ Map<String, Object> metadata) {
+
+ if (sourceType == targetType || (sourceType != null && sourceType.equals(targetType))) {
+ return source;
+ }
+
+ DataType<DataType> eSourceDataType =
+ new DataTypeImpl<DataType>("idl:fault", sourceExType.getPhysical(), sourceType);
+ DataType<DataType> eTargetDataType =
+ new DataTypeImpl<DataType>("idl:fault", targetExType.getPhysical(), targetType);
+
+ return mediator.mediate(source, eSourceDataType, eTargetDataType, metadata);
+ }
+
+ private DataType getFaultType(DataType exceptionType) {
+ return exceptionType == null ? null : (DataType)exceptionType.getLogical();
+ }
+
+ private boolean typesMatch(Object first, Object second) {
+ if (first.equals(second)) {
+ return true;
+ }
+ if (first instanceof XMLType && second instanceof XMLType) {
+ XMLType t1 = (XMLType)first;
+ XMLType t2 = (XMLType)second;
+ // TUSCANY-2113, we should compare element names only
+ return matches(t1.getElementName(), t2.getElementName());
+ }
+ return false;
+ }
+
+ /**
+ * @param qn1
+ * @param qn2
+ */
+ private boolean matches(QName qn1, QName qn2) {
+ if (qn1 == qn2) {
+ return true;
+ }
+ if (qn1 == null || qn2 == null) {
+ return false;
+ }
+ String ns1 = qn1.getNamespaceURI();
+ String ns2 = qn2.getNamespaceURI();
+ String e1 = qn1.getLocalPart();
+ String e2 = qn2.getLocalPart();
+ if (e1.equals(e2) && (ns1.equals(ns2) || ns1.equals(ns2 + "/") || ns2.equals(ns1 + "/"))) {
+ // Tolerating the trailing / which is required by JAX-WS java package --> xml ns mapping
+ return true;
+ }
+ return false;
+ }
+}
|