Adding JMCR-Stable version

[Benchmarks_CSolver.git] / JMCR-Stable / real-world application / MyDerby-10.3 / java / engine / org / apache / derby / impl / sql / compile / MaterializeResultSetNode.java

diff --git a/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/MaterializeResultSetNode.java b/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/MaterializeResultSetNode.java
new file mode 100644 (file)
index 0000000..f52e552
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+++ b/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/MaterializeResultSetNode.java
@@ -0,0 +1,125 @@
+/*\r
+\r
+   Derby - Class org.apache.derby.impl.sql.compile.MaterializeResultSetNode\r
+\r
+   Licensed to the Apache Software Foundation (ASF) under one or more\r
+   contributor license agreements.  See the NOTICE file distributed with\r
+   this work for additional information regarding copyright ownership.\r
+   The ASF licenses this file to you under the Apache License, Version 2.0\r
+   (the "License"); you may not use this file except in compliance with\r
+   the License.  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
+\r
+package        org.apache.derby.impl.sql.compile;\r
+\r
+import org.apache.derby.iapi.services.context.ContextManager;\r
+\r
+import org.apache.derby.iapi.sql.compile.Optimizable;\r
+import org.apache.derby.iapi.sql.compile.OptimizableList;\r
+import org.apache.derby.iapi.sql.compile.OptimizablePredicate;\r
+import org.apache.derby.iapi.sql.compile.OptimizablePredicateList;\r
+import org.apache.derby.iapi.sql.compile.Optimizer;\r
+import org.apache.derby.iapi.sql.compile.Visitable;\r
+import org.apache.derby.iapi.sql.compile.Visitor;\r
+import org.apache.derby.iapi.sql.compile.RequiredRowOrdering;\r
+\r
+import org.apache.derby.iapi.sql.dictionary.DataDictionary;\r
+\r
+import org.apache.derby.iapi.sql.Activation;\r
+import org.apache.derby.iapi.sql.ResultSet;\r
+\r
+import org.apache.derby.iapi.error.StandardException;\r
+\r
+import org.apache.derby.impl.sql.compile.ActivationClassBuilder;\r
+\r
+import org.apache.derby.iapi.services.compiler.MethodBuilder;\r
+\r
+import org.apache.derby.iapi.services.sanity.SanityManager;\r
+import org.apache.derby.iapi.reference.ClassName;\r
+\r
+import org.apache.derby.iapi.services.classfile.VMOpcode;\r
+\r
+import java.util.Properties;\r
+\r
+/**\r
+ * A MaterializeResultSetNode represents a materialization result set for any \r
+ * child result set that needs one.\r
+ *\r
+ */\r
+\r
+public class MaterializeResultSetNode extends SingleChildResultSetNode\r
+{\r
+       /**\r
+        * Initializer for a MaterializeResultSetNode.\r
+        *\r
+        * @param childResult   The child ResultSetNode\r
+        * @param rcl                   The RCL for the node\r
+        * @param tableProperties       Properties list associated with the table\r
+        */\r
+\r
+       public void init(Object childResult,\r
+                                                               Object rcl,\r
+                                                               Object tableProperties)\r
+       {\r
+               super.init(childResult, tableProperties);\r
+               resultColumns = (ResultColumnList) rcl;\r
+       }\r
+\r
+       /**\r
+        * Prints the sub-nodes of this object.  See QueryTreeNode.java for\r
+        * how tree printing is supposed to work.\r
+        *\r
+        * @param depth         The depth of this node in the tree\r
+        */\r
+\r
+       public void printSubNodes(int depth)\r
+       {\r
+               if (SanityManager.DEBUG)\r
+               {\r
+                       super.printSubNodes(depth);\r
+               }\r
+       }\r
+\r
+    /**\r
+     *\r
+        *\r
+        * @exception StandardException         Thrown on error\r
+     */\r
+       public void generate(ActivationClassBuilder acb,\r
+                                                               MethodBuilder mb)\r
+                                                       throws StandardException\r
+       {\r
+               if (SanityManager.DEBUG)\r
+        SanityManager.ASSERT(resultColumns != null, "Tree structure bad");\r
+\r
+               /* Get the next ResultSet #, so that we can number this ResultSetNode, its\r
+                * ResultColumnList and ResultSet.\r
+                */\r
+               assignResultSetNumber();\r
+\r
+               // Get the cost estimate from the child if we don't have one yet\r
+               costEstimate = childResult.getFinalCostEstimate();\r
+\r
+               // build up the tree.\r
+\r
+               // Generate the child ResultSet\r
+               acb.pushGetResultSetFactoryExpression(mb);\r
+\r
+               childResult.generate(acb, mb);\r
+               mb.push(resultSetNumber);\r
+               mb.push(costEstimate.rowCount());\r
+               mb.push(costEstimate.getEstimatedCost());\r
+\r
+               mb.callMethod(VMOpcode.INVOKEINTERFACE, (String) null, "getMaterializedResultSet",\r
+                                               ClassName.NoPutResultSet, 4);\r
+       }\r
+}\r