Adding JMCR-Stable version

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

diff --git a/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/TestConstraintNode.java b/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/TestConstraintNode.java
new file mode 100644 (file)
index 0000000..6eee0a7
--- /dev/null
+++ b/JMCR-Stable/real-world application/MyDerby-10.3/java/engine/org/apache/derby/impl/sql/compile/TestConstraintNode.java
@@ -0,0 +1,146 @@
+/*\r
+\r
+   Derby - Class org.apache.derby.impl.sql.compile.TestConstraintNode\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.sql.compile.C_NodeTypes;\r
+\r
+import org.apache.derby.iapi.services.compiler.MethodBuilder;\r
+import org.apache.derby.iapi.reference.ClassName;\r
+\r
+import org.apache.derby.iapi.error.StandardException;\r
+\r
+import org.apache.derby.iapi.types.TypeId;\r
+import org.apache.derby.iapi.types.BooleanDataValue;\r
+import org.apache.derby.iapi.types.DataTypeDescriptor;\r
+\r
+import org.apache.derby.impl.sql.compile.ExpressionClassBuilder;\r
+import org.apache.derby.iapi.services.classfile.VMOpcode;\r
+\r
+import java.util.Vector;\r
+\r
+/**\r
+ * A TestConstraintNode is used to determine when a constraint\r
+ * has been violated.\r
+ *\r
+ */\r
+\r
+public class TestConstraintNode extends UnaryLogicalOperatorNode\r
+{\r
+       private String sqlState;\r
+       private String tableName;\r
+       private String constraintName;\r
+\r
+       /**\r
+        * Initializer for a TestConstraintNode\r
+        *\r
+        * @param booleanValue  The operand of the constraint test\r
+        * @param sqlState      The SQLState of the exception to throw if the\r
+        *                                      constraint has failed\r
+        * @param tableName     The name of the table that the constraint is on\r
+        * @param constraintName        The name of the constraint being checked\r
+        */\r
+\r
+       public void init(Object booleanValue,\r
+                                        Object sqlState,\r
+                                        Object tableName,\r
+                                        Object constraintName)\r
+       {\r
+               super.init(booleanValue, "throwExceptionIfFalse");\r
+               this.sqlState = (String) sqlState;\r
+               this.tableName = (String) tableName;\r
+               this.constraintName = (String) constraintName;\r
+       }\r
+\r
+       /**\r
+        * Bind this logical operator.  All that has to be done for binding\r
+        * a logical operator is to bind the operand, check that the operand\r
+        * is SQLBoolean, and set the result type to SQLBoolean.\r
+        *\r
+        * @param fromList                      The query's FROM list\r
+        * @param subqueryList          The subquery list being built as we find SubqueryNodes\r
+        * @param aggregateVector       The aggregate vector being built as we find AggregateNodes\r
+        *\r
+        * @return      The new top of the expression tree.\r
+        *\r
+        * @exception StandardException         Thrown on error\r
+        */\r
+\r
+       public ValueNode bindExpression(\r
+               FromList fromList, SubqueryList subqueryList,\r
+               Vector  aggregateVector)\r
+                       throws StandardException\r
+       {\r
+               bindOperand(fromList, subqueryList, aggregateVector);\r
+\r
+               /*\r
+               ** If the operand is not boolean, cast it.\r
+               */\r
+\r
+               if (!operand.getTypeServices().getTypeId().isBooleanTypeId())\r
+               {\r
+                       operand = (ValueNode)\r
+                               getNodeFactory().getNode(\r
+                                       C_NodeTypes.CAST_NODE,\r
+                                       operand,\r
+                                       new DataTypeDescriptor(TypeId.BOOLEAN_ID, true),\r
+                                       getContextManager());\r
+                       ((CastNode) operand).bindCastNodeOnly();\r
+               }\r
+\r
+               /* Set the type info */\r
+               setFullTypeInfo();\r
+\r
+               return this;\r
+       }\r
+\r
+       /**\r
+        * Do code generation for the TestConstraint operator.\r
+        *\r
+        * @param acb   The ExpressionClassBuilder for the class we're generating\r
+        * @param mb    The method the expression will go into\r
+        *\r
+        *\r
+        * @exception StandardException         Thrown on error\r
+        */\r
+\r
+       public void generateExpression(ExpressionClassBuilder acb,\r
+                                                                                       MethodBuilder mb)\r
+                                                                       throws StandardException\r
+       {\r
+\r
+               /*\r
+               ** This generates the following code:\r
+               **\r
+               ** operand.testConstraint(sqlState, tableName, constraintName)\r
+               */\r
+\r
+               operand.generateExpression(acb, mb);\r
+\r
+               mb.push(sqlState);\r
+               mb.push(tableName);\r
+               mb.push(constraintName);\r
+\r
+               mb.callMethod(VMOpcode.INVOKEINTERFACE, ClassName.BooleanDataValue,\r
+                               "throwExceptionIfFalse", ClassName.BooleanDataValue, 3);\r
+\r
+       }\r
+}\r