[ONOS-4350] Inter Jar dependency implementation and code restructuring.

Change-Id: Iacac75e4187aed93ce1754c170a9c19707e5b8c3
diff --git a/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangType.java b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangType.java
new file mode 100644
index 0000000..a19167a
--- /dev/null
+++ b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangType.java
@@ -0,0 +1,274 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.
+ */
+
+package org.onosproject.yangutils.datamodel;
+
+import java.io.Serializable;
+
+import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
+
+import static org.onosproject.yangutils.datamodel.YangDataTypes.DERIVED;
+
+/*
+ * Reference:RFC 6020.
+ * The "type" statement takes as an argument a string that is the name
+ *  of a YANG built-in type or a derived type, followed by an optional
+ *  block of sub-statements that are used to put further restrictions
+ *  on the type.
+ *
+ *  The restrictions that can be applied depend on the type being restricted.
+ *  The type's sub-statements
+ *
+ * +------------------+---------+-------------+------------------------------------+
+ * | substatement     | section | cardinality | mapped data type                   |
+ * +------------------+---------+-------------+------------------------------------+
+ * | bit              | 9.7.4   | 0..n        | - YangBit used in YangBits         |
+ * | enum             | 9.6.4   | 0..n        | - YangEnum used in YangEnumeration |
+ * | length           | 9.4.4   | 0..1        | - used for string                  |
+ * | path             | 9.9.2   | 0..1        | - TODO leaf-ref                    |
+ * | pattern          | 9.4.6   | 0..n        | - used for string                  |
+ * | range            | 9.2.4   | 0..1        | - used for integer data type       |
+ * | require-instance | 9.13.2  | 0..1        | - TODO instance-identifier         |
+ * | type             | 7.4     | 0..n        | - TODO union                       |
+ * +------------------+---------+-------------+------------------------------------+
+ */
+
+/**
+ * Represents the data type information.
+ *
+ * @param <T> YANG data type info
+ */
+public class YangType<T>
+        implements Parsable, Resolvable, Serializable {
+
+    private static final long serialVersionUID = 8062016054L;
+
+    /**
+     * YANG node identifier.
+     */
+    private YangNodeIdentifier nodeIdentifier;
+
+    /**
+     * Java package in which the Java type is defined.
+     */
+    private String javaPackage;
+
+    /**
+     * YANG data type.
+     */
+    private YangDataTypes dataType;
+
+    /**
+     * Additional information about data type, example restriction info, named
+     * values, etc. The extra information is based on the data type. Based on
+     * the data type, the extended info can vary.
+     */
+    private T dataTypeExtendedInfo;
+
+    /**
+     * Status of resolution. If completely resolved enum value is "RESOLVED",
+     * if not enum value is "UNRESOLVED", in case reference of grouping/typedef
+     * is added to uses/type but it's not resolved value of enum should be
+     * "INTRA_FILE_RESOLVED".
+     */
+    private ResolvableStatus resolvableStatus;
+
+    /**
+     * Creates a YANG type object.
+     */
+    public YangType() {
+
+        nodeIdentifier = new YangNodeIdentifier();
+        resolvableStatus = ResolvableStatus.UNRESOLVED;
+    }
+
+    /**
+     * Returns prefix associated with data type name.
+     *
+     * @return prefix associated with data type name
+     */
+    public String getPrefix() {
+        return nodeIdentifier.getPrefix();
+    }
+
+    /**
+     * Sets prefix associated with data type name.
+     *
+     * @param prefix prefix associated with data type name
+     */
+    public void setPrefix(String prefix) {
+        nodeIdentifier.setPrefix(prefix);
+    }
+
+    /**
+     * Returns the name of data type.
+     *
+     * @return the name of data type
+     */
+    public String getDataTypeName() {
+        return nodeIdentifier.getName();
+    }
+
+    /**
+     * Sets the name of the data type.
+     *
+     * @param typeName the name to set
+     */
+    public void setDataTypeName(String typeName) {
+        nodeIdentifier.setName(typeName);
+    }
+
+    /**
+     * Returns the Java package where the type is defined.
+     *
+     * @return Java package where the type is defined
+     */
+    public String getJavaPackage() {
+        return javaPackage;
+    }
+
+    /**
+     * Sets Java package where the type is defined.
+     *
+     * @param javaPackage Java package where the type is defined
+     */
+    public void setJavaPackage(String javaPackage) {
+        this.javaPackage = javaPackage;
+    }
+
+    /**
+     * Returns the type of data.
+     *
+     * @return the data type
+     */
+    public YangDataTypes getDataType() {
+        return dataType;
+    }
+
+    /**
+     * Sets the type of data.
+     *
+     * @param dataType data type
+     */
+    public void setDataType(YangDataTypes dataType) {
+        this.dataType = dataType;
+    }
+
+    /**
+     * Returns the data type meta data.
+     *
+     * @return the data type meta data
+     */
+    public T getDataTypeExtendedInfo() {
+        return dataTypeExtendedInfo;
+    }
+
+    /**
+     * Sets the data type meta data.
+     *
+     * @param dataTypeInfo the meta data to set
+     */
+    public void setDataTypeExtendedInfo(T dataTypeInfo) {
+        this.dataTypeExtendedInfo = dataTypeInfo;
+    }
+
+    /**
+     * Returns node identifier.
+     *
+     * @return node identifier
+     */
+    public YangNodeIdentifier getNodeIdentifier() {
+        return nodeIdentifier;
+    }
+
+    /**
+     * Sets node identifier.
+     *
+     * @param nodeIdentifier the node identifier
+     */
+    public void setNodeIdentifier(YangNodeIdentifier nodeIdentifier) {
+        this.nodeIdentifier = nodeIdentifier;
+    }
+
+    /**
+     * Returns the type of the parsed data.
+     *
+     * @return returns TYPE_DATA
+     */
+    @Override
+    public YangConstructType getYangConstructType() {
+        return YangConstructType.TYPE_DATA;
+    }
+
+    /**
+     * Validates the data on entering the corresponding parse tree node.
+     *
+     * @throws DataModelException a violation of data model rules
+     */
+    @Override
+    public void validateDataOnEntry()
+            throws DataModelException {
+        // TODO auto-generated method stub, to be implemented by parser
+    }
+
+    /**
+     * Validates the data on exiting the corresponding parse tree node.
+     *
+     * @throws DataModelException a violation of data model rules
+     */
+    @Override
+    public void validateDataOnExit()
+            throws DataModelException {
+        // TODO auto-generated method stub, to be implemented by parser
+    }
+
+    @Override
+    public ResolvableStatus getResolvableStatus() {
+        return resolvableStatus;
+    }
+
+    @Override
+    public void setResolvableStatus(ResolvableStatus resolvableStatus) {
+        this.resolvableStatus = resolvableStatus;
+    }
+
+    @Override
+    public void resolve()
+            throws DataModelException {
+        /*
+         * Check whether the data type is derived.
+         */
+        if (getDataType() != DERIVED) {
+            throw new DataModelException("Linker Error: Resolve should only be called for derived data types.");
+        }
+
+        // Check if the derived info is present.
+        YangDerivedInfo<?> derivedInfo = (YangDerivedInfo<?>) getDataTypeExtendedInfo();
+        if (derivedInfo == null) {
+            throw new DataModelException("Linker Error: Derived information is missing.");
+        }
+
+        // Initiate the resolution
+        try {
+            setResolvableStatus(derivedInfo.resolve());
+        } catch (DataModelException e) {
+            throw new DataModelException(e.getMessage());
+        }
+    }
+}