--- /dev/null
+/*\r
+\r
+ Derby - Class org.apache.derby.iapi.types.SQLNClob\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.iapi.types;\r
+\r
+import org.apache.derby.iapi.types.DataTypeDescriptor;\r
+import org.apache.derby.iapi.types.DataValueDescriptor;\r
+import org.apache.derby.iapi.types.TypeId;\r
+import org.apache.derby.iapi.types.StringDataValue;\r
+import org.apache.derby.iapi.reference.SQLState;\r
+import org.apache.derby.iapi.error.StandardException;\r
+\r
+import org.apache.derby.iapi.services.io.FormatIdUtil;\r
+import org.apache.derby.iapi.services.io.StoredFormatIds;\r
+\r
+import org.apache.derby.iapi.services.sanity.SanityManager;\r
+\r
+import org.apache.derby.iapi.services.i18n.LocaleFinder;\r
+\r
+import java.util.Locale;\r
+\r
+import java.sql.Date;\r
+import java.sql.Time;\r
+import java.sql.Timestamp;\r
+import java.util.Calendar;\r
+\r
+/**\r
+ * SQLNClob satisfies the DataValueDescriptor interfaces (i.e., OrderableDataType). It implements a String\r
+ * holder, e.g. for storing a column value; it can be specified\r
+ * when constructed to not allow nulls. Nullability cannot be changed\r
+ * after construction.\r
+ * <p>\r
+ *** ----- TODO: fix for NCLOB\r
+ * Because OrderableDataType is a subclass of DataType,\r
+ * SQLNationalLongvarchar can play a role in either a DataType/ValueRow\r
+ * or a OrderableDataType/KeyRow, interchangeably.\r
+ *** ----- TODO: fix for NCLOB\r
+ * SQLNationalLongvarchar is mostly the same as SQLLongvarchar, so it is implemented as a\r
+ * subclass of SQLLongvarchar. Only those methods with different behavior are\r
+ * implemented here.\r
+ */\r
+public class SQLNClob\r
+ extends SQLNationalVarchar\r
+{\r
+ /*\r
+ * DataValueDescriptor interface.\r
+ *\r
+ * These are actually all implemented in the super-class, but we need\r
+ * to duplicate some of them here so they can be called by byte-code\r
+ * generation, which needs to know the class the method appears in.\r
+ */\r
+\r
+ public String getTypeName()\r
+ {\r
+ return TypeId.NCLOB_NAME;\r
+ }\r
+\r
+ /*\r
+ * DataValueDescriptor interface\r
+ */\r
+\r
+ /** @see DataValueDescriptor#getClone */\r
+ public DataValueDescriptor getClone()\r
+ {\r
+ try\r
+ {\r
+ /* NOTE: We pass instance variables for locale info \r
+ * because we only call methods when we know that we\r
+ * will need locale info.\r
+ */\r
+ return new SQLNClob(getString(), getLocaleFinder());\r
+ }\r
+ catch (StandardException se)\r
+ {\r
+ if (SanityManager.DEBUG)\r
+ SanityManager.THROWASSERT("Unexpected exception", se);\r
+ return null;\r
+ }\r
+ }\r
+\r
+ /**\r
+ * @see DataValueDescriptor#getNewNull\r
+ *\r
+ */\r
+ public DataValueDescriptor getNewNull()\r
+ {\r
+ /* NOTE: We pass instance variables for locale info \r
+ * because we only call methods when we know that we\r
+ * will need locale info.\r
+ */\r
+ SQLNClob result = new SQLNClob();\r
+ result.setLocaleFinder(getLocaleFinder());\r
+ return result;\r
+ }\r
+\r
+ /*\r
+ * Storable interface, implies Externalizable, TypedFormat\r
+ */\r
+\r
+ /**\r
+ Return my format identifier.\r
+\r
+ @see org.apache.derby.iapi.services.io.TypedFormat#getTypeFormatId\r
+ */\r
+ public int getTypeFormatId() {\r
+ return StoredFormatIds.SQL_NCLOB_ID;\r
+ }\r
+\r
+ /*\r
+ * constructors\r
+ */\r
+\r
+ public SQLNClob()\r
+ {\r
+ }\r
+\r
+ public SQLNClob(String val, LocaleFinder localeFinder)\r
+ {\r
+ super(val, localeFinder);\r
+ }\r
+\r
+ /**\r
+ * @see DataValueDescriptor#getDate\r
+ * @exception StandardException thrown on failure to convert\r
+ */\r
+ public Date getDate( Calendar cal) throws StandardException\r
+ {\r
+ return nationalGetDate(cal);\r
+ }\r
+\r
+ /**\r
+ * @see DataValueDescriptor#getTime\r
+ * @exception StandardException thrown on failure to convert\r
+ */\r
+ public Time getTime( Calendar cal) throws StandardException\r
+ {\r
+ return nationalGetTime(cal);\r
+ }\r
+\r
+ /**\r
+ * @see DataValueDescriptor#getTimestamp\r
+ * @exception StandardException thrown on failure to convert\r
+ */\r
+ public Timestamp getTimestamp( Calendar cal) throws StandardException\r
+ {\r
+ return nationalGetTimestamp(cal);\r
+ }\r
+\r
+ /*\r
+ * DataValueDescriptor interface\r
+ */\r
+\r
+ /* @see DataValueDescriptor#typePrecedence */\r
+ public int typePrecedence()\r
+ {\r
+ return TypeId.CLOB_PRECEDENCE;\r
+ }\r
+\r
+ /** \r
+ **** ---- TODO: Disable?\r
+ * Compare two SQLChars. This method will be overriden in the\r
+ * National char wrappers so that the appropriate comparison\r
+ * is done.\r
+ *\r
+ * @exception StandardException Thrown on error\r
+ */\r
+ protected int stringCompare(SQLChar char1, SQLChar char2)\r
+ throws StandardException\r
+ {\r
+ return char1.stringCollatorCompare(char2); \r
+ }\r
+\r
+ /**\r
+ * Get a SQLVarchar for a built-in string function. \r
+ * (Could be either a SQLVarchar or SQLNationalVarchar.)\r
+ *\r
+ * @return a SQLVarchar or SQLNationalVarchar.\r
+ */\r
+ protected StringDataValue getNewVarchar()\r
+ {\r
+ return new SQLNationalVarchar();\r
+ }\r
+\r
+ /** \r
+ * Return whether or not this is a national character datatype.\r
+ */\r
+ protected boolean isNationalString()\r
+ {\r
+ return true;\r
+ }\r
+\r
+ /**\r
+ * @see DataValueDescriptor#setValue\r
+ *\r
+ * @exception StandardException Thrown on error\r
+ */\r
+ public void setValue(Date theValue, Calendar cal) throws StandardException\r
+ {\r
+ setValue(getDateFormat(cal).format(theValue));\r
+ }\r
+\r
+ /**\r
+ * @see DataValueDescriptor#setValue\r
+ *\r
+ * @exception StandardException Thrown on error\r
+ */\r
+ public void setValue(Time theValue, Calendar cal) throws StandardException\r
+ {\r
+ setValue(getTimeFormat(cal).format(theValue));\r
+ }\r
+\r
+ /**\r
+ * @see DataValueDescriptor#setValue\r
+ *\r
+ * @exception StandardException Thrown on error\r
+ */\r
+ public void setValue(Timestamp theValue, Calendar cal) throws StandardException\r
+ {\r
+ setValue(getTimestampFormat(cal).format(theValue));\r
+ }\r
+ protected void setFrom(DataValueDescriptor theValue) throws StandardException {\r
+\r
+ setValue(((DataType) theValue).getNationalString(getLocaleFinder()));\r
+ }\r
+\r
+ /** @see java.lang.Object#hashCode */\r
+ public int hashCode()\r
+ {\r
+ return nationalHashCode();\r
+ }\r
+}\r
projects / Benchmarks_CSolver.git / blobdiff