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Adds support for qualifying columns with table.

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Adds support common in other ResultSet implemenatations for qualifying column names with table name to distinguish potentially duplicate column names in a join of two or more tables from one another. The expected format is {table_name}.{column_namne}, where column_name is the actuall designated column name and not the column label.
This commit is contained in:
Chad Attermann
2024-04-16 18:43:00 -06:00
committed by Juergen Hoeller
parent 2d942a6e91
commit cb48077698
1 changed files with 10 additions and 1 deletions
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11
spring-jdbc/src/main/java/org/springframework/jdbc/support/rowset/ResultSetWrappingSqlRowSet.java
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@@ -99,7 +99,7 @@ public class ResultSetWrappingSqlRowSet implements SqlRowSet {
ResultSetMetaData rsmd = resultSet.getMetaData();
if (rsmd != null) {
int columnCount = rsmd.getColumnCount();
this.columnLabelMap = CollectionUtils.newHashMap(columnCount);
this.columnLabelMap = CollectionUtils.newHashMap(columnCount * 2);
for (int i = 1; i <= columnCount; i++) {
String key = rsmd.getColumnLabel(i);
// Make sure to preserve first matching column for any given name,
@@ -107,6 +107,15 @@ public class ResultSetWrappingSqlRowSet implements SqlRowSet {
if (!this.columnLabelMap.containsKey(key)) {
this.columnLabelMap.put(key, i);
}
// Also support column names prefixed with table name
// as in {table_name}.{column.name}.
String table = rsmd.getTableName(i);
if (table != null && !table.isEmpty()) {
key = table + "." + rsmd.getColumnName(i);
if (!this.columnLabelMap.containsKey(key)) {
this.columnLabelMap.put(key, i);
}
}
}
}
else {