removed all files

[xerial/xerial-core.git] / src / main / java / org / xerial / lens / relation / TupleElement.java

diff --git a/src/main/java/org/xerial/lens/relation/TupleElement.java b/src/main/java/org/xerial/lens/relation/TupleElement.java
deleted file mode 100755 (executable)
index e0cff5c..0000000
--- a/src/main/java/org/xerial/lens/relation/TupleElement.java
+++ /dev/null
@@ -1,97 +0,0 @@
-/*--------------------------------------------------------------------------\r
- *  Copyright 2009 Taro L. Saito\r
- *\r
- *  Licensed under the Apache License, Version 2.0 (the "License");\r
- *  you may not use this file except in compliance with the License.\r
- *  You may obtain a copy of the License at\r
- *\r
- *     http://www.apache.org/licenses/LICENSE-2.0\r
- *\r
- *  Unless required by applicable law or agreed to in writing, software\r
- *  distributed under the License is distributed on an "AS IS" BASIS,\r
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
- *  See the License for the specific language governing permissions and\r
- *  limitations under the License.\r
- *--------------------------------------------------------------------------*/\r
-//--------------------------------------\r
-// XerialJ\r
-//\r
-// TupleCell.java\r
-// Since: 2009/05/13 9:20:19\r
-//\r
-// $URL$\r
-// $Author$\r
-//--------------------------------------\r
-package org.xerial.lens.relation;\r
-\r
-/**\r
- * A composite pattern interface for representing tree node and tuple structure.\r
- * Tuples containing this cell element allow non 1-NF (tuples can contain\r
- * tuples) data representation.\r
- * \r
- * @author leo\r
- * \r
- */\r
-public interface TupleElement<Element> {\r
-    /**\r
-     * Returns true if this element is a singleton, i.e. no more nested nodes\r
-     * \r
-     * @return\r
-     */\r
-    public boolean isAtom();\r
-\r
-    /**\r
-     * Returns true if this cell is a tuple\r
-     * \r
-     * @return\r
-     */\r
-    public boolean isTuple();\r
-\r
-    /**\r
-     * Get the number of elements contained in this element. When this element\r
-     * is an atom, the size will be 1. When a tuple, the returned size is the\r
-     * tuple size.\r
-     * \r
-     * @return\r
-     */\r
-    public int size();\r
-\r
-    /**\r
-     * Get the tuple element at the specified index\r
-     * \r
-     * @param index\r
-     * @return\r
-     */\r
-    TupleElement<Element> get(TupleIndex index);\r
-\r
-    /**\r
-     * If the cell at the specified index is a node, then return the node,\r
-     * otherwise return null\r
-     * \r
-     * @param index\r
-     * @return node\r
-     */\r
-    Element getElement(TupleIndex index);\r
-\r
-    /**\r
-     * if this cell is node, then return node. otherwise return null\r
-     * \r
-     * @return\r
-     */\r
-    Element castToElement();\r
-\r
-    /**\r
-     * If this cell is tuple, then return tuple. otherwise return null\r
-     * \r
-     * @return\r
-     */\r
-    Tuple<Element> castToTuple();\r
-\r
-    /**\r
-     * Accept the visitor\r
-     * \r
-     * @param visitor\r
-     */\r
-    void accept(TupleVisitor<Element> visitor);\r
-\r
-}\r