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-rw-r--r--bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/XQueryScriptTask.java475
1 files changed, 232 insertions, 243 deletions
diff --git a/bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/XQueryScriptTask.java b/bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/XQueryScriptTask.java
index 4b34ddf0f0..6080768cee 100644
--- a/bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/XQueryScriptTask.java
+++ b/bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/XQueryScriptTask.java
@@ -1,244 +1,233 @@
-/*-
- * ============LICENSE_START=======================================================
- * ONAP - SO
- * ================================================================================
- * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
- * Copyright (C) 2017 Huawei Technologies Co., Ltd. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * ============LICENSE_END=========================================================
- */
-
-package org.openecomp.mso.bpmn.core;
-
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.math.BigDecimal;
-import java.net.URI;
-import java.util.Iterator;
-
-import javax.xml.transform.stream.StreamSource;
-
-import org.camunda.bpm.engine.ProcessEngineException;
-import org.camunda.bpm.engine.delegate.DelegateExecution;
-//import java.util.logging.Logger;
-import org.camunda.bpm.engine.delegate.Expression;
-
-import org.openecomp.mso.logger.MessageEnum;
-import org.openecomp.mso.logger.MsoLogger;
-
-import net.sf.saxon.Configuration;
-import net.sf.saxon.s9api.DocumentBuilder;
-import net.sf.saxon.s9api.Processor;
-import net.sf.saxon.s9api.QName;
-import net.sf.saxon.s9api.XQueryCompiler;
-import net.sf.saxon.s9api.XQueryEvaluator;
-import net.sf.saxon.s9api.XQueryExecutable;
-import net.sf.saxon.s9api.XdmAtomicValue;
-import net.sf.saxon.s9api.XdmItem;
-import net.sf.saxon.s9api.XdmNode;
-
-/**
- * Executes an XQuery script.
- * <p>
- * Required fields:<br/><br/>
- * &nbsp;&nbsp;&nbsp;&nbsp;scriptFile: the XQuery script file path<br/>
- * &nbsp;&nbsp;&nbsp;&nbsp;outputVariable: the output variable name<br/>
- * <p>
- * Optional fields:<br/><br/>
- * &nbsp;&nbsp;&nbsp;&nbsp;xmlInputVariables: CSV list of variables containing
- * XML data to be injected into the script<br/>
- * &nbsp;&nbsp;&nbsp;&nbsp;atomicInputVariables: CSV list of variables containing
- * atomic data to be injected into the script<br/>
- */
-public class XQueryScriptTask extends BaseTask {
-
- private static MsoLogger msoLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.BPEL);
-
- private Expression scriptFile;
- private Expression xmlInputVariables;
- private Expression atomicInputVariables;
- private Expression outputVariable;
-
- public void execute(DelegateExecution execution) throws Exception {
- if (msoLogger.isDebugEnabled()) {
- msoLogger.debug("Started Executing " + getTaskName());
- }
-
- String theScriptFile =
- getStringField(scriptFile, execution, "scriptFile");
- String theXmlInputVariables =
- getOptionalStringField(xmlInputVariables, execution, "xmlInputVariables");
- String theAtomicInputVariables =
- getOptionalStringField(atomicInputVariables, execution, "atomicInputVariables");
- String theOutputVariable =
- getStringField(outputVariable, execution, "outputVariable");
-
- if (msoLogger.isDebugEnabled()) {
- msoLogger.debug ("scriptFile = " + theScriptFile
- + " xmlInputVariables = " + theXmlInputVariables
- + " atomicInputVariables = " + theAtomicInputVariables
- + "outputVariable = " + theOutputVariable);
- }
-
- String[] xmlInputVariableArray = (theXmlInputVariables == null)
- ? new String[0] : theXmlInputVariables.split(",[ ]*");
-
- String[] atomicInputVariableArray = (theAtomicInputVariables == null)
- ? new String[0] : theAtomicInputVariables.split(",[ ]*");
-
- Boolean shouldFail = (Boolean) execution.getVariable("shouldFail");
-
- if (shouldFail != null && shouldFail) {
- throw new ProcessEngineException(getClass().getSimpleName() + " Failed");
- }
-
- // The script could be compiled once and reused, but we are reading it
- // and compiling it every time.
- Configuration configuration = new Configuration();
- Processor processor = new Processor(configuration);
- XQueryCompiler compiler = processor.newXQueryCompiler();
- XQueryExecutable executable = compile(compiler, theScriptFile);
-
- // The evaluator must not be shared by multiple threads. Here is where
- // the initial context may be set, as well as values of external variables.
- XQueryEvaluator evaluator = executable.load();
-
- // Convert XML string variable content to document-node objects and inject
- // these into the evaluator. Note: the script must accept the document-node
- // type. Most MSO scripts today expect element() input, not document-node
- // input. TODO: figure out how to pass the variable data as element() types.
-
- for (String xmlInputVariable : xmlInputVariableArray) {
- if (msoLogger.isDebugEnabled()) {
- msoLogger.debug("Injecting XML variable '" + xmlInputVariable + "'");
- msoLogger.debug("printing the variable content>>'" + execution.getVariable(xmlInputVariable) +"'");
- }
-
- String xml = (String) execution.getVariable(xmlInputVariable);
- DocumentBuilder documentBuilder = processor.newDocumentBuilder();
- StreamSource source = new StreamSource(new ByteArrayInputStream(xml.getBytes("UTF-8")));
- XdmNode xdmNode = documentBuilder.build(source);
-
- // Inject the document-node object into the XQueryEvaluator.
- // TODO: transform it to an element()
- QName variable = new QName(xmlInputVariable);
- evaluator.setExternalVariable(variable, xdmNode);
- }
-
- // Inject atomic variables into the evaluator.
-
- for (String atomicInputVariable : atomicInputVariableArray) {
-
- if (msoLogger.isDebugEnabled()) {
- msoLogger.debug ("Injecting object variable '"
- + atomicInputVariable + "'");
- }
-
- QName variable = new QName(atomicInputVariable);
- Object value = execution.getVariable(atomicInputVariable);
-
- if (value == null) {
- // The variable value is null, so we have no way to know what
- // type it is. I don't know how to deal with this, so for
- // now, just skip it.
-
- msoLogger.warn (MessageEnum.BPMN_VARIABLE_NULL, "BPMN", MsoLogger.getServiceName(), MsoLogger.ErrorCode.DataError, atomicInputVariable);
-
- continue;
- }
-
- // There might be a better way to do this...
- if (value instanceof BigDecimal) {
- evaluator.setExternalVariable(variable,
- new XdmAtomicValue((BigDecimal) value));
- } else if (value instanceof Boolean) {
- evaluator.setExternalVariable(variable,
- new XdmAtomicValue((Boolean) value));
- } else if (value instanceof Double) {
- evaluator.setExternalVariable(variable,
- new XdmAtomicValue((Double) value));
- } else if (value instanceof Float) {
- evaluator.setExternalVariable(variable,
- new XdmAtomicValue((Float) value));
- } else if (value instanceof Long) {
- evaluator.setExternalVariable(variable,
- new XdmAtomicValue((Long) value));
- } else if (value instanceof String) {
- evaluator.setExternalVariable(variable,
- new XdmAtomicValue((String) value));
- } else if (value instanceof URI) {
- evaluator.setExternalVariable(variable,
- new XdmAtomicValue((URI) value));
- } else {
- throw new BadInjectedFieldException(
- "atomicInputVariables", getTaskName(),
- "'" + atomicInputVariable + "' type is not supported: "
- + value.getClass());
- }
- }
-
- // Evaluate the query and collect the output.
- StringBuilder output = new StringBuilder();
- Iterator<XdmItem> xdmItems = evaluator.iterator();
- while (xdmItems.hasNext()) {
- XdmItem item = xdmItems.next();
-
- if (msoLogger.isDebugEnabled()) {
- msoLogger.debug("XQuery result item = " + item);
- }
-
- output.append(item.toString());
- }
-
- // Set the output variable.
- execution.setVariable(theOutputVariable, output.toString());
-
- if (msoLogger.isDebugEnabled()) {
- msoLogger.debug("Done Executing " + getTaskName());
- }
- }
-
- /**
- * Compiles an XQuery script contained in a resource (file).
- * @param compiler the XQueryCompiler
- * @param resource the resource path
- * @return an XQueryExecutable
- * @throws Exception on error
- */
- private XQueryExecutable compile(XQueryCompiler compiler, String resource)
- throws Exception {
- InputStream xqStream = null;
- try {
- xqStream = getClass().getResourceAsStream(resource);
-
- if (xqStream == null) {
- throw new IOException("Resource not found: " + resource);
- }
-
- XQueryExecutable executable = compiler.compile(xqStream);
- xqStream.close();
- xqStream = null;
- return executable;
- } finally {
- if (xqStream != null) {
- try {
- xqStream.close();
- } catch (Exception e) {
- msoLogger.debug ("Exception:", e);
- }
- }
- }
- }
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017 Huawei Technologies Co., Ltd. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.mso.bpmn.core;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.math.BigDecimal;
+import java.net.URI;
+import java.util.Iterator;
+
+import javax.xml.transform.stream.StreamSource;
+
+import org.camunda.bpm.engine.ProcessEngineException;
+import org.camunda.bpm.engine.delegate.DelegateExecution;
+//import java.util.logging.Logger;
+import org.camunda.bpm.engine.delegate.Expression;
+
+import org.openecomp.mso.logger.MessageEnum;
+import org.openecomp.mso.logger.MsoLogger;
+
+import net.sf.saxon.Configuration;
+import net.sf.saxon.s9api.DocumentBuilder;
+import net.sf.saxon.s9api.Processor;
+import net.sf.saxon.s9api.QName;
+import net.sf.saxon.s9api.XQueryCompiler;
+import net.sf.saxon.s9api.XQueryEvaluator;
+import net.sf.saxon.s9api.XQueryExecutable;
+import net.sf.saxon.s9api.XdmAtomicValue;
+import net.sf.saxon.s9api.XdmItem;
+import net.sf.saxon.s9api.XdmNode;
+
+/**
+ * Executes an XQuery script.
+ * <p>
+ * Required fields:<br/><br/>
+ * &nbsp;&nbsp;&nbsp;&nbsp;scriptFile: the XQuery script file path<br/>
+ * &nbsp;&nbsp;&nbsp;&nbsp;outputVariable: the output variable name<br/>
+ * <p>
+ * Optional fields:<br/><br/>
+ * &nbsp;&nbsp;&nbsp;&nbsp;xmlInputVariables: CSV list of variables containing
+ * XML data to be injected into the script<br/>
+ * &nbsp;&nbsp;&nbsp;&nbsp;atomicInputVariables: CSV list of variables containing
+ * atomic data to be injected into the script<br/>
+ */
+public class XQueryScriptTask extends BaseTask {
+
+ private static MsoLogger msoLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.BPEL);
+
+ private Expression scriptFile;
+ private Expression xmlInputVariables;
+ private Expression atomicInputVariables;
+ private Expression outputVariable;
+
+ public void execute(DelegateExecution execution) throws Exception {
+ if (msoLogger.isDebugEnabled()) {
+ msoLogger.debug("Started Executing " + getTaskName());
+ }
+
+ String theScriptFile =
+ getStringField(scriptFile, execution, "scriptFile");
+ String theXmlInputVariables =
+ getOptionalStringField(xmlInputVariables, execution, "xmlInputVariables");
+ String theAtomicInputVariables =
+ getOptionalStringField(atomicInputVariables, execution, "atomicInputVariables");
+ String theOutputVariable =
+ getStringField(outputVariable, execution, "outputVariable");
+
+ if (msoLogger.isDebugEnabled()) {
+ msoLogger.debug ("scriptFile = " + theScriptFile
+ + " xmlInputVariables = " + theXmlInputVariables
+ + " atomicInputVariables = " + theAtomicInputVariables
+ + "outputVariable = " + theOutputVariable);
+ }
+
+ String[] xmlInputVariableArray = (theXmlInputVariables == null)
+ ? new String[0] : theXmlInputVariables.split(",[ ]*");
+
+ String[] atomicInputVariableArray = (theAtomicInputVariables == null)
+ ? new String[0] : theAtomicInputVariables.split(",[ ]*");
+
+ Boolean shouldFail = (Boolean) execution.getVariable("shouldFail");
+
+ if (shouldFail != null && shouldFail) {
+ throw new ProcessEngineException(getClass().getSimpleName() + " Failed");
+ }
+
+ // The script could be compiled once and reused, but we are reading it
+ // and compiling it every time.
+ Configuration configuration = new Configuration();
+ Processor processor = new Processor(configuration);
+ XQueryCompiler compiler = processor.newXQueryCompiler();
+ XQueryExecutable executable = compile(compiler, theScriptFile);
+ if (executable == null) {
+ throw new ProcessEngineException(getClass().getSimpleName() + " Failed");
+ }
+
+ // The evaluator must not be shared by multiple threads. Here is where
+ // the initial context may be set, as well as values of external variables.
+ XQueryEvaluator evaluator = executable.load();
+
+ // Convert XML string variable content to document-node objects and inject
+ // these into the evaluator. Note: the script must accept the document-node
+ // type. Most MSO scripts today expect element() input, not document-node
+ // input. TODO: figure out how to pass the variable data as element() types.
+
+ for (String xmlInputVariable : xmlInputVariableArray) {
+ if (msoLogger.isDebugEnabled()) {
+ msoLogger.debug("Injecting XML variable '" + xmlInputVariable + "'");
+ msoLogger.debug("printing the variable content>>'" + execution.getVariable(xmlInputVariable) +"'");
+ }
+
+ String xml = (String) execution.getVariable(xmlInputVariable);
+ DocumentBuilder documentBuilder = processor.newDocumentBuilder();
+ StreamSource source = new StreamSource(new ByteArrayInputStream(xml.getBytes("UTF-8")));
+ XdmNode xdmNode = documentBuilder.build(source);
+
+ // Inject the document-node object into the XQueryEvaluator.
+ // TODO: transform it to an element()
+ QName variable = new QName(xmlInputVariable);
+ evaluator.setExternalVariable(variable, xdmNode);
+ }
+
+ // Inject atomic variables into the evaluator.
+
+ for (String atomicInputVariable : atomicInputVariableArray) {
+
+ if (msoLogger.isDebugEnabled()) {
+ msoLogger.debug ("Injecting object variable '"
+ + atomicInputVariable + "'");
+ }
+
+ QName variable = new QName(atomicInputVariable);
+ Object value = execution.getVariable(atomicInputVariable);
+
+ if (value == null) {
+ // The variable value is null, so we have no way to know what
+ // type it is. I don't know how to deal with this, so for
+ // now, just skip it.
+
+ msoLogger.warn (MessageEnum.BPMN_VARIABLE_NULL, "BPMN", MsoLogger.getServiceName(), MsoLogger.ErrorCode.DataError, atomicInputVariable);
+
+ continue;
+ }
+
+ // There might be a better way to do this...
+ if (value instanceof BigDecimal) {
+ evaluator.setExternalVariable(variable,
+ new XdmAtomicValue((BigDecimal) value));
+ } else if (value instanceof Boolean) {
+ evaluator.setExternalVariable(variable,
+ new XdmAtomicValue((Boolean) value));
+ } else if (value instanceof Double) {
+ evaluator.setExternalVariable(variable,
+ new XdmAtomicValue((Double) value));
+ } else if (value instanceof Float) {
+ evaluator.setExternalVariable(variable,
+ new XdmAtomicValue((Float) value));
+ } else if (value instanceof Long) {
+ evaluator.setExternalVariable(variable,
+ new XdmAtomicValue((Long) value));
+ } else if (value instanceof String) {
+ evaluator.setExternalVariable(variable,
+ new XdmAtomicValue((String) value));
+ } else if (value instanceof URI) {
+ evaluator.setExternalVariable(variable,
+ new XdmAtomicValue((URI) value));
+ } else {
+ throw new BadInjectedFieldException(
+ "atomicInputVariables", getTaskName(),
+ "'" + atomicInputVariable + "' type is not supported: "
+ + value.getClass());
+ }
+ }
+
+ // Evaluate the query and collect the output.
+ StringBuilder output = new StringBuilder();
+ Iterator<XdmItem> xdmItems = evaluator.iterator();
+ while (xdmItems.hasNext()) {
+ XdmItem item = xdmItems.next();
+
+ if (msoLogger.isDebugEnabled()) {
+ msoLogger.debug("XQuery result item = " + item);
+ }
+
+ output.append(item.toString());
+ }
+
+ // Set the output variable.
+ execution.setVariable(theOutputVariable, output.toString());
+
+ if (msoLogger.isDebugEnabled()) {
+ msoLogger.debug("Done Executing " + getTaskName());
+ }
+ }
+
+ /**
+ * Compiles an XQuery script contained in a resource (file).
+ * @param compiler the XQueryCompiler
+ * @param resource the resource path
+ * @return an XQueryExecutable
+ * @throws Exception on error
+ */
+ private XQueryExecutable compile(XQueryCompiler compiler, String resource)
+ throws Exception {
+ try (InputStream xqStream = getClass().getResourceAsStream(resource)) {
+ XQueryExecutable executable = compiler.compile(xqStream);
+ return executable;
+ } catch (Exception e) {
+ msoLogger.debug ("Exception at resourceFile stream:", e);
+ return null;
+ }
+ }
} \ No newline at end of file