add general support for unsupported parameters in modifying requests.

mifosng-provider/src/main/java/org/mifosng/platform/api/errorhandling/UnrecognizedPropertyExceptionMapper.java

@@ -0,0 +1,45 @@
+package org.mifosng.platform.api.errorhandling;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+import javax.ws.rs.ext.ExceptionMapper;
+import javax.ws.rs.ext.Provider;
+
+import org.codehaus.jackson.map.exc.UnrecognizedPropertyException;
+import org.mifosng.data.ApiGlobalErrorResponse;
+import org.mifosng.data.ApiParameterError;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+/**
+ * An {@link ExceptionMapper} to map {@link UnrecognizedPropertyException} thrown by platform into a HTTP API friendly format.
+ * 
+ * The {@link UnrecognizedPropertyException} is typically thrown when a parameter is passed during and post or put that is not expected.
+ */
+@Provider
+@Component
+@Scope("singleton")
+public class UnrecognizedPropertyExceptionMapper implements ExceptionMapper<UnrecognizedPropertyException> {
+
+	@Override
+	public Response toResponse(UnrecognizedPropertyException exception) {
+		
+		String parameterName = exception.getUnrecognizedPropertyName();
+		
+		StringBuilder validationErrorCode = new StringBuilder("error.msg.parameter.").append(parameterName).append(".unsupported");
+		StringBuilder defaultEnglishMessage = new StringBuilder("The parameter ").append(parameterName).append(" is not supported.");
+		ApiParameterError error = ApiParameterError.parameterError(validationErrorCode.toString(), defaultEnglishMessage.toString(), parameterName);
+		
+		List<ApiParameterError> errors = new ArrayList<ApiParameterError>();		
+		errors.add(error);
+		
+		ApiGlobalErrorResponse invalidParameterError = ApiGlobalErrorResponse.badClientRequest(
+				"validation.msg.validation.errors.exist",
+				"Validation errors exist.", errors);
+		
+		return Response.status(Status.BAD_REQUEST).entity(invalidParameterError).build();
+	}
+}