[ONOS-4350] Inter file linking implementation and inter-jar linking framework

Change-Id: I71a26ba3e0b9d17261e78a9313fe7f047195932e
diff --git a/src/main/java/org/onosproject/yangutils/datamodel/YangLengthRestriction.java b/src/main/java/org/onosproject/yangutils/datamodel/YangLengthRestriction.java
new file mode 100644
index 0000000..8556445
--- /dev/null
+++ b/src/main/java/org/onosproject/yangutils/datamodel/YangLengthRestriction.java
@@ -0,0 +1,217 @@
+/*
+ * 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;
+
+/*-
+ * Reference RFC 6020.
+ *
+ * Binary can be restricted with "length" statements alone.
+ *
+ */
+
+import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
+import org.onosproject.yangutils.parser.Parsable;
+import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.utils.builtindatatype.YangUint64;
+
+/**
+ * Represents the restriction for length data type.
+ */
+public class YangLengthRestriction implements YangDesc, YangReference, YangAppErrorInfo, Parsable {
+
+    /*-
+     * Reference RFC 6020.
+     * The length Statement
+     *
+     * The "length" statement, which is an optional sub-statement to the
+     * "type" statement, takes as an argument a length expression string.
+     * It is used to restrict the built-in type "string", or types derived
+     * from "string".
+     * A "length" statement restricts the number of unicode characters in
+     * the string.
+     * A length range consists of an explicit value, or a lower bound, two
+     * consecutive dots "..", and an upper bound.  Multiple values or ranges
+     * can be given, separated by "|".  Length-restricting values MUST NOT
+     * be negative.  If multiple values or ranges are given, they all MUST
+     * be disjoint and MUST be in ascending order.  If a length restriction
+     * is applied to an already length-restricted type, the new restriction
+     * MUST be equal or more limiting, that is, raising the lower bounds,
+     * reducing the upper bounds, removing explicit length values or ranges,
+     * or splitting ranges into multiple ranges with intermediate gaps.  A
+     * length value is a non-negative integer, or one of the special values
+     * "min" or "max". "min" and "max" mean the minimum and maximum length
+     * accepted for the type being restricted, respectively.  An
+     * implementation is not required to support a length value larger than
+     * 18446744073709551615.
+     * The length's sub-statements
+     *
+     *  +---------------+---------+-------------+-----------------+
+     *  | substatement  | section | cardinality | mapped data type|
+     *  +---------------+---------+-------------+-----------------+
+     *  | description   | 7.19.3  | 0..1        | string          |
+     *  | error-app-tag | 7.5.4.2 | 0..1        | string          |
+     *  | error-message | 7.5.4.1 | 0..1        | string          |
+     *  | reference     | 7.19.4  | 0..1        | string          |
+     *  +---------------+---------+-------------+-----------------+
+     */
+
+    /**
+     * Length restriction information.
+     */
+    private YangRangeRestriction<YangUint64> lengthRestriction;
+
+    /**
+     * Textual reference.
+     */
+    private String reference;
+
+    /**
+     * Application's error message, to be used for data error.
+     */
+    private String errorMessage;
+
+    /**
+     * Application's error tag, to be filled in data validation error response.
+     */
+    private String errorAppTag;
+
+    /**
+     * Textual description.
+     */
+    private String description;
+
+    /**
+     * Creates a YANG length restriction object.
+     */
+    public YangLengthRestriction() {
+    }
+
+    /**
+     * Returns the length restriction on the string data.
+     *
+     * @return length restriction on the string data
+     */
+    public YangRangeRestriction<YangUint64> getLengthRestriction() {
+        return lengthRestriction;
+    }
+
+    /**
+     * Sets the length restriction on the string data.
+     *
+     * @param lengthRestriction length restriction on the string data
+     */
+    public void setLengthRestriction(YangRangeRestriction<YangUint64> lengthRestriction) {
+        this.lengthRestriction = lengthRestriction;
+    }
+
+    /**
+     * Returns the textual reference of the length restriction.
+     *
+     * @return textual reference of the length restriction
+     */
+    @Override
+    public String getReference() {
+        return reference;
+    }
+
+    /**
+     * Sets the textual reference of the length restriction.
+     *
+     * @param ref textual reference of the length restriction
+     */
+    @Override
+    public void setReference(String ref) {
+        reference = ref;
+    }
+
+    /**
+     * Returns the description of the length restriction.
+     *
+     * @return description of the length restriction
+     */
+    @Override
+    public String getDescription() {
+        return description;
+    }
+
+    /**
+     * Sets the description of the length restriction.
+     *
+     * @param desc description of the length restriction
+     */
+    @Override
+    public void setDescription(String desc) {
+        description = desc;
+
+    }
+
+    /**
+     * Returns application's error message, to be used for data error.
+     *
+     * @return Application's error message, to be used for data error
+     */
+    @Override
+    public String getGetErrorMessage() {
+        return errorMessage;
+    }
+
+    /**
+     * Sets Application's error message, to be used for data error.
+     *
+     * @param errMsg Application's error message, to be used for data error
+     */
+    @Override
+    public void setErrorMessage(String errMsg) {
+        errorMessage = errMsg;
+
+    }
+
+    /**
+     * Returns application's error tag, to be used for data error.
+     *
+     * @return application's error tag, to be used for data error
+     */
+    @Override
+    public String getGetErrorAppTag() {
+        return errorAppTag;
+    }
+
+    /**
+     * Sets application's error tag, to be used for data error.
+     *
+     * @param errTag application's error tag, to be used for data error.
+     */
+    @Override
+    public void setErrorAppTag(String errTag) {
+        errorAppTag = errTag;
+    }
+
+    @Override
+    public YangConstructType getYangConstructType() {
+        return YangConstructType.PATTERN_DATA;
+    }
+
+    @Override
+    public void validateDataOnEntry() throws DataModelException {
+        //TODO: implement the method.
+    }
+
+    @Override
+    public void validateDataOnExit() throws DataModelException {
+        //TODO: implement the method.
+    }
+}