Fixed YANG union type resolving in yang model parser.

Signed-off-by: mvitez <mvitez@cisco.com>

diff --git a/yang-model-util/src/main/java/org/opendaylight/controller/model/util/UnionType.java b/yang-model-util/src/main/java/org/opendaylight/controller/model/util/UnionType.java
new file mode 100644 (file)
index 0000000..9bac8bc
--- /dev/null
+++ b/yang-model-util/src/main/java/org/opendaylight/controller/model/util/UnionType.java
@@ -0,0 +1,129 @@
+/*
+  * 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.model.util;
+
+import java.util.Collections;
+import java.util.List;
+
+import org.opendaylight.controller.model.api.type.UnionTypeDefinition;
+import org.opendaylight.controller.yang.common.QName;
+import org.opendaylight.controller.yang.model.api.SchemaPath;
+import org.opendaylight.controller.yang.model.api.Status;
+import org.opendaylight.controller.yang.model.api.TypeDefinition;
+import org.opendaylight.controller.yang.model.api.UnknownSchemaNode;
+
+public class UnionType implements UnionTypeDefinition {
+
+    private final QName name = BaseTypes.constructQName("union");
+    private final SchemaPath path = BaseTypes.schemaPath(name);
+    private final String description = "The union built-in type represents a value that corresponds to one of its member types.";
+    private final String reference = "https://tools.ietf.org/html/rfc6020#section-9.12";
+
+    private final List<TypeDefinition<?>> types;
+
+
+    public UnionType(List<TypeDefinition<?>> types) {
+        if(types == null) {
+            throw new NullPointerException("When the type is 'union', the 'type' statement MUST be present.");
+        }
+        this.types = types;
+    }
+
+    @Override
+    public UnionTypeDefinition getBaseType() {
+        return this;
+    }
+
+    @Override
+    public String getUnits() {
+        return null;
+    }
+
+    @Override
+    public Object getDefaultValue() {
+        return null;
+    }
+
+    @Override
+    public QName getQName() {
+        return name;
+    }
+
+    @Override
+    public SchemaPath getPath() {
+        return path;
+    }
+
+    @Override
+    public String getDescription() {
+        return description;
+    }
+
+    @Override
+    public String getReference() {
+        return reference;
+    }
+
+    @Override
+    public Status getStatus() {
+        return Status.CURRENT;
+    }
+
+    @Override
+    public List<UnknownSchemaNode> getUnknownSchemaNodes() {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public List<TypeDefinition<?>> getTypes() {
+        return types;
+    }
+
+    @Override
+    public int hashCode() {
+        // TODO: implement hashcode
+        return 4;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        UnionType other = (UnionType) obj;
+        if (types == null) {
+            if (other.types != null) {
+                return false;
+            }
+        } else if (!types.equals(other.types)) {
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        builder.append("UnionType [name=");
+        builder.append(name);
+        builder.append(", types=[");
+        for(TypeDefinition<?> td : types) {
+            builder.append(", "+ td.getQName().getLocalName());
+        }
+        builder.append("]");
+        builder.append("]");
+        return builder.toString();
+    }
+
+}