Add YangConstants.operation{Input,Output}QName()

[yangtools.git] / yang / yang-common / src / main / java / org / opendaylight / yangtools / yang / common / YangConstants.java

diff --git a/yang/yang-common/src/main/java/org/opendaylight/yangtools/yang/common/YangConstants.java b/yang/yang-common/src/main/java/org/opendaylight/yangtools/yang/common/YangConstants.java
index 3b362cf8b8a79a92f81a4163761be79cd73bfa3e..641fcf345a70bfd236872af37455292d56aa215f 100644 (file)
--- a/yang/yang-common/src/main/java/org/opendaylight/yangtools/yang/common/YangConstants.java
+++ b/yang/yang-common/src/main/java/org/opendaylight/yangtools/yang/common/YangConstants.java
@@ -75,7 +75,33 @@ public final class YangConstants {
      */
     public static final String YANG_XPATH_FUNCTIONS_PREFIX = "yang";
 
+    // Dummy template QNames. These are never leaked, but are used for efficient instantiation via QName#withModule()
+    private static final QName DUMMY_OPERATION_INPUT = QName.create("DUMMY", "input");
+    private static final QName DUMMY_OPERATION_OUTPUT = QName.create("DUMMY", "output");
+
     private YangConstants() {
         throw new UnsupportedOperationException("Utility class");
     }
+
+    /**
+     * Create a {@link QName} representing the 'input' statement of an operation (RPC or action) within specified
+     * {@link QNameModule}.
+     *
+     * @param module Desired module
+     * @return A QName representing action or RPC input.
+     */
+    public static QName operationInputQName(final QNameModule module) {
+        return DUMMY_OPERATION_INPUT.withModule(module);
+    }
+
+    /**
+     * Create a {@link QName} representing the 'output' statement of an operation (RPC or action) within specified
+     * {@link QNameModule}.
+     *
+     * @param module Desired module
+     * @return A QName representing action or RPC output.
+     */
+    public static QName operationOutputQName(final QNameModule module) {
+        return DUMMY_OPERATION_OUTPUT.withModule(module);
+    }
 }