--- /dev/null
+/*\r
+\r
+ Derby - Class org.apache.derby.impl.sql.compile.LOBTypeCompiler\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.loader.ClassFactory;\r
+\r
+import org.apache.derby.iapi.services.sanity.SanityManager;\r
+\r
+import org.apache.derby.iapi.services.io.StoredFormatIds;\r
+\r
+import org.apache.derby.iapi.error.StandardException;\r
+\r
+import org.apache.derby.iapi.types.BitDataValue;\r
+import org.apache.derby.iapi.types.DataValueFactory;\r
+import org.apache.derby.iapi.types.TypeId;\r
+\r
+import org.apache.derby.iapi.types.DataTypeDescriptor;\r
+\r
+import org.apache.derby.iapi.sql.compile.TypeCompiler;\r
+\r
+import org.apache.derby.iapi.reference.ClassName;\r
+\r
+import java.sql.Types;\r
+import org.apache.derby.iapi.reference.JDBC20Translation;\r
+\r
+/**\r
+ * This class implements TypeCompiler for the SQL LOB types.\r
+ *\r
+ */\r
+\r
+public class LOBTypeCompiler extends BaseTypeCompiler\r
+{\r
+ /**\r
+ * Tell whether this type (LOB) can be converted to the given type.\r
+ *\r
+ * @see TypeCompiler#convertible\r
+ */\r
+ public boolean convertible(TypeId otherType, \r
+ boolean forDataTypeFunction)\r
+ {\r
+\r
+ return (otherType.isBlobTypeId());\r
+ }\r
+\r
+ /**\r
+ * Tell whether this type (LOB) is compatible with the given type.\r
+ *\r
+ * @param otherType The TypeId of the other type.\r
+ */\r
+ public boolean compatible(TypeId otherType)\r
+ {\r
+ return convertible(otherType,false);\r
+ }\r
+\r
+ /**\r
+ * Tell whether this type (LOB) can be stored into from the given type.\r
+ *\r
+ * @param otherType The TypeId of the other type.\r
+ * @param cf A ClassFactory\r
+ */\r
+\r
+ public boolean storable(TypeId otherType, ClassFactory cf)\r
+ {\r
+ // no automatic conversions at store time\r
+\r
+ return (otherType.isBlobTypeId());\r
+ }\r
+\r
+ /** @see TypeCompiler#interfaceName */\r
+ public String interfaceName()\r
+ {\r
+ return ClassName.BitDataValue;\r
+ }\r
+\r
+ /**\r
+ * @see TypeCompiler#getCorrespondingPrimitiveTypeName\r
+ */\r
+\r
+ public String getCorrespondingPrimitiveTypeName() {\r
+ int formatId = getStoredFormatIdFromTypeId();\r
+ switch (formatId) {\r
+ case StoredFormatIds.BLOB_TYPE_ID: return "java.sql.Blob";\r
+ default:\r
+ if (SanityManager.DEBUG)\r
+ SanityManager.THROWASSERT("unexpected formatId in getCorrespondingPrimitiveTypeName() - " + formatId);\r
+ return null;\r
+ }\r
+ }\r
+\r
+ /**\r
+ * @see TypeCompiler#getCastToCharWidth\r
+ */\r
+ public int getCastToCharWidth(DataTypeDescriptor dts)\r
+ {\r
+ return dts.getMaximumWidth();\r
+ }\r
+\r
+ String nullMethodName() {\r
+ int formatId = getStoredFormatIdFromTypeId();\r
+ switch (formatId) {\r
+ case StoredFormatIds.BLOB_TYPE_ID: return "getNullBlob";\r
+ default:\r
+ if (SanityManager.DEBUG)\r
+ SanityManager.THROWASSERT("unexpected formatId in nullMethodName() - " + formatId);\r
+ return null;\r
+ }\r
+ }\r
+\r
+ String dataValueMethodName()\r
+ {\r
+ int formatId = getStoredFormatIdFromTypeId();\r
+ switch (formatId) {\r
+ case StoredFormatIds.BLOB_TYPE_ID: return "getBlobDataValue";\r
+ default:\r
+ if (SanityManager.DEBUG)\r
+ SanityManager.THROWASSERT("unexpected formatId in dataValueMethodName() - " + formatId);\r
+ return null;\r
+ }\r
+ }\r
+}\r