Add support for configuration attributes based on yang leaves with custom types ...
[controller.git] / opendaylight / netconf / config-netconf-connector / src / main / java / org / opendaylight / controller / netconf / confignetconfconnector / mapping / attributes / toxml / SimpleCompositeAttributeWritingStrategy.java
diff --git a/opendaylight/netconf/config-netconf-connector/src/main/java/org/opendaylight/controller/netconf/confignetconfconnector/mapping/attributes/toxml/SimpleCompositeAttributeWritingStrategy.java b/opendaylight/netconf/config-netconf-connector/src/main/java/org/opendaylight/controller/netconf/confignetconfconnector/mapping/attributes/toxml/SimpleCompositeAttributeWritingStrategy.java
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+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.netconf.confignetconfconnector.mapping.attributes.toxml;
+
+import com.google.common.base.Preconditions;
+import org.opendaylight.controller.netconf.confignetconfconnector.util.Util;
+import org.w3c.dom.Document;
+
+import java.util.Map;
+
+public class SimpleCompositeAttributeWritingStrategy extends SimpleAttributeWritingStrategy {
+
+    /**
+     * @param document
+     * @param key
+     */
+    public SimpleCompositeAttributeWritingStrategy(Document document, String key) {
+        super(document, key);
+    }
+
+    protected Object preprocess(Object value) {
+        Util.checkType(value, Map.class);
+        Preconditions.checkArgument(((Map)value).size() == 1, "Unexpected number of values in %s, expected 1", value);
+        return ((Map)value).values().iterator().next();
+    }
+
+}