1 files changed, 123 insertions, 0 deletions
diff --git a/ECOMP-PDP/src/main/java/org/openecomp/policy/xacml/pdp/std/functions/FunctionDefinitionCustomRegexpMatch.java b/ECOMP-PDP/src/main/java/org/openecomp/policy/xacml/pdp/std/functions/FunctionDefinitionCustomRegexpMatch.java
new file mode 100644
index 000000000..9e63052a4
--- /dev/null
+++ b/ECOMP-PDP/src/main/java/org/openecomp/policy/xacml/pdp/std/functions/FunctionDefinitionCustomRegexpMatch.java
@@ -0,0 +1,123 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ECOMP-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.openecomp.policy.xacml.pdp.std.functions;
+
+
+import java.util.List;
+
+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: 0.1 $
+ * 
+ * @param <I> the java class for the data type of the function Input arguments
+ */
+public class FunctionDefinitionCustomRegexpMatch<I> extends FunctionDefinitionBase<Boolean, I> {
+
+	
+	/**
+	 * 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<String>(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<I>(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) {
+			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()));
+		// 
+		
+		if (elementValueString.matches(regexpValue)) {
+			return ER_TRUE;
+		} else {
+			return ER_FALSE;
+		}
+
+	}
+
+
+	
+	
+
+}