--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP-PDP
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. 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.onap.policy.xacml.pdp.std.functions;
+
+
+import java.util.List;
+
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+
+import com.att.research.xacml.api.DataType;
+import com.att.research.xacml.api.DataTypeException;
+import com.att.research.xacml.api.Identifier;
+import com.att.research.xacml.std.StdStatus;
+import com.att.research.xacml.std.StdStatusCode;
+import com.att.research.xacml.std.datatypes.DataTypes;
+import com.att.research.xacmlatt.pdp.eval.EvaluationContext;
+import com.att.research.xacmlatt.pdp.policy.ExpressionResult;
+import com.att.research.xacmlatt.pdp.policy.FunctionArgument;
+import com.att.research.xacmlatt.pdp.std.functions.ConvertedArgument;
+import com.att.research.xacmlatt.pdp.std.functions.FunctionDefinitionBase;
+
+/**
+ * FunctionDefinitionCustomRegexMatch implements {@link com.att.research.xacmlatt.pdp.policy.FunctionDefinition} to
+ * implement the custom 'type'-regex-match predicates as functions taking two arguments, the first of <code>String</code>,
+ * and the second of the type for that specific predicate as a regular expression,
+ * and returning a <code>Boolean</code> for whether the regular expression matches the string representation of the first argument.
+ *
+ *
+ * @version $Revision: 0.2 $
+ *
+ * @param <I> the java class for the data type of the function Input arguments
+ */
+public class FunctionDefinitionCustomRegexpMatch<I> extends FunctionDefinitionBase<Boolean, I> {
+ private static Logger logger = FlexLogger.getLogger(FunctionDefinitionCustomRegexpMatch.class);
+
+ /**
+ * Constructor - need dataTypeArgs input because of java Generic type-erasure during compilation.
+ *
+ * @param idIn
+ * @param dataTypeArgsIn
+ */
+ public FunctionDefinitionCustomRegexpMatch(Identifier idIn, DataType<I> dataTypeArgsIn) {
+ super(idIn, DataTypes.DT_BOOLEAN, dataTypeArgsIn, false);
+ }
+
+
+ @Override
+ public ExpressionResult evaluate(EvaluationContext evaluationContext, List<FunctionArgument> arguments) {
+
+ if (arguments == null || arguments.size() != 2) {
+ return ExpressionResult.newError(new StdStatus(StdStatusCode.STATUS_CODE_PROCESSING_ERROR, this.getShortFunctionId() + " Expected 2 arguments, got " +
+ ((arguments == null) ? "null" : arguments.size()) ));
+ }
+
+ // get the regular expression
+ FunctionArgument regexpArgument = arguments.get(0);
+
+ ConvertedArgument<String> convertedArgument = new ConvertedArgument<>(regexpArgument, DataTypes.DT_STRING, false);
+ if ( ! convertedArgument.isOk()) {
+ return ExpressionResult.newError(getFunctionStatus(convertedArgument.getStatus()));
+ }
+
+ // String regexpValue = (String)regexpArgument.getValue().getValue();
+ String regexpValue = convertedArgument.getValue();
+
+
+ // now get the element to match
+ FunctionArgument elementArgument = arguments.get(1);
+
+ ConvertedArgument<I> convertedElement = new ConvertedArgument<>(elementArgument, this.getDataTypeArgs(), false);
+ if ( ! convertedElement.isOk()) {
+ return ExpressionResult.newError(getFunctionStatus(convertedElement.getStatus()));
+ }
+
+ I elementValueObject = convertedElement.getValue();
+
+ String elementValueString;
+ try {
+ elementValueString = this.getDataTypeArgs().toStringValue(elementValueObject);
+ } catch (DataTypeException e) {
+ logger.error(e.getMessage() +e);
+ String message = e.getMessage();
+ if (e.getCause() != null) {
+ message = e.getCause().getMessage();
+ }
+ return ExpressionResult.newError(new StdStatus(StdStatusCode.STATUS_CODE_PROCESSING_ERROR, this.getShortFunctionId() + " " + message));
+ }
+
+ // ConvertedArgument checks for null value, so do not need to do again here
+
+ // Adding this code will Change the Functionality which allows to retrieve Multiple-policy using single request.
+ elementValueString = elementValueString + regexpValue ;
+ regexpValue = elementValueString.substring(0,(elementValueString.length()- regexpValue.length()));
+ elementValueString = elementValueString.substring(regexpValue.length(),(elementValueString.length()));
+ //
+ // Supporting multiple values in the element and be able to query them.
+ if(elementValueString.contains(",")){
+ String[] elements = elementValueString.split(",");
+ for(int i=0; i<elements.length; i++){
+ if(elements[i].trim().matches(regexpValue)) {
+ return ER_TRUE;
+ }
+ }
+ }
+ if (elementValueString.matches(regexpValue)) {
+ return ER_TRUE;
+ } else {
+ return ER_FALSE;
+ }
+
+ }
+}
Code Review / policy / engine.git / blobdiff