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Java > Open Source Codes > org > objectstyle > cayenne > dba > oracle > OracleDataNode


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56 package org.objectstyle.cayenne.dba.oracle;
57
58 import java.sql.Connection JavaDoc;
59 import java.sql.SQLException JavaDoc;
60 import java.util.List JavaDoc;
61
62 import org.objectstyle.cayenne.access.DataNode;
63 import org.objectstyle.cayenne.access.OperationObserver;
64 import org.objectstyle.cayenne.access.trans.BatchQueryBuilder;
65 import org.objectstyle.cayenne.access.trans.LOBBatchQueryBuilder;
66 import org.objectstyle.cayenne.access.trans.LOBBatchQueryWrapper;
67 import org.objectstyle.cayenne.query.BatchQuery;
68
69 /**
70  * DataNode subclass customized for Oracle database engine.
71  *
72  * @deprecated Since 1.2 DataNode customization is done entirely via DbAdapter.
73  * @author Andrei Adamchik
74  */
75 public class OracleDataNode extends DataNode {
76
77     public OracleDataNode() {
78         super();
79     }
80
81     public OracleDataNode(String JavaDoc name) {
82         super(name);
83     }
84
85  
86     /**
87      * Special update method that is called from OracleAdapter if LOB columns are to be
88      * updated.
89      */
90     public void runBatchUpdateWithLOBColumns(
91             Connection JavaDoc con,
92             BatchQuery query,
93             OperationObserver delegate) throws SQLException JavaDoc, Exception JavaDoc {
94
95         new OracleLOBBatchAction(query, getAdapter()).performAction(con, delegate);
96     }
97
98     /**
99      * Selects a LOB row and writes LOB values.
100      */
101     protected void processLOBRow(
102             Connection JavaDoc con,
103             LOBBatchQueryBuilder queryBuilder,
104             LOBBatchQueryWrapper selectQuery,
105             List JavaDoc qualifierAttributes) throws SQLException JavaDoc, Exception JavaDoc {
106
107         new OracleLOBBatchAction(null, getAdapter()).processLOBRow(con,
108                 queryBuilder,
109                 selectQuery,
110                 qualifierAttributes);
111     }
112
113     /**
114      * Configures BatchQueryBuilder to trim CHAR column values, and then invokes super
115      * implementation.
116      */
117     protected void runBatchUpdateAsBatch(
118             Connection JavaDoc con,
119             BatchQuery query,
120             BatchQueryBuilder queryBuilder,
121             OperationObserver delegate) throws SQLException JavaDoc, Exception JavaDoc {
122
123         queryBuilder.setTrimFunction(OracleAdapter.TRIM_FUNCTION);
124         super.runBatchUpdateAsBatch(con, query, queryBuilder, delegate);
125     }
126
127     /**
128      * Configures BatchQueryBuilder to trim CHAR column values, and then invokes super
129      * implementation.
130      */
131     protected void runBatchUpdateAsIndividualQueries(
132             Connection JavaDoc con,
133             BatchQuery query,
134             BatchQueryBuilder queryBuilder,
135             OperationObserver delegate) throws SQLException JavaDoc, Exception JavaDoc {
136
137         queryBuilder.setTrimFunction(OracleAdapter.TRIM_FUNCTION);
138         super.runBatchUpdateAsIndividualQueries(con, query, queryBuilder, delegate);
139     }
140 }
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