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feat(java): implement getCharacterStream() in JDBC4ResultSet

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This commit is contained in:
kimminseok
2025-10-07 14:06:59 +09:00
parent fcb0323218
commit 2aa76709c2
2 changed files with 49 additions and 2 deletions
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9
bindings/java/src/main/java/tech/turso/jdbc4/JDBC4ResultSet.java
View File

@@ -1,6 +1,7 @@
package tech.turso.jdbc4;
import java.io.InputStream;
import java.io.StringReader;
import java.io.Reader;
import java.math.BigDecimal;
import java.math.RoundingMode;
@@ -380,13 +381,17 @@ public final class JDBC4ResultSet implements ResultSet, ResultSetMetaData {
@Override
@SkipNullableCheck
public Reader getCharacterStream(int columnIndex) throws SQLException {
throw new UnsupportedOperationException("not implemented");
final Object result = resultSet.get(columnIndex);
if (result == null) {
return null;
}
return wrapTypeConversion(() -> new StringReader((String) result));
}
@Override
@SkipNullableCheck
public Reader getCharacterStream(String columnLabel) throws SQLException {
throw new UnsupportedOperationException("not implemented");
return getCharacterStream(findColumn(columnLabel));
}
@Override

42
bindings/java/src/test/java/tech/turso/jdbc4/JDBC4ResultSetTest.java
View File

@@ -7,6 +7,7 @@ import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.io.Reader;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.sql.ResultSet;
@@ -589,4 +590,45 @@ class JDBC4ResultSetTest {
assertEquals(1, resultSet.findColumn("user name"));
assertEquals(2, resultSet.findColumn("user-id"));
}
@Test
void test_getCharacterStream() throws Exception {
stmt.executeUpdate("CREATE TABLE test_char_stream (text_col TEXT);");
stmt.executeUpdate("INSERT INTO test_char_stream (text_col) VALUES ('Hello World');");
ResultSet resultSet = stmt.executeQuery("SELECT * FROM test_char_stream");
assertTrue(resultSet.next());
Reader reader = resultSet.getCharacterStream(1);
char[] buffer = new char[11];
int charsRead = reader.read(buffer);
assertEquals(11, charsRead);
assertEquals("Hello World", new String(buffer));
}
@Test
void test_getCharacterStream_with_columnLabel() throws Exception {
stmt.executeUpdate("CREATE TABLE test_char_stream (text_col TEXT);");
stmt.executeUpdate("INSERT INTO test_char_stream (text_col) VALUES ('Test Data');");
ResultSet resultSet = stmt.executeQuery("SELECT * FROM test_char_stream");
assertTrue(resultSet.next());
Reader reader = resultSet.getCharacterStream("text_col");
char[] buffer = new char[9];
reader.read(buffer);
assertEquals("Test Data", new String(buffer));
}
@Test
void test_getCharacterStream_returns_null_on_null() throws Exception {
stmt.executeUpdate("CREATE TABLE test_null (text_col TEXT);");
stmt.executeUpdate("INSERT INTO test_null (text_col) VALUES (NULL);");
ResultSet resultSet = stmt.executeQuery("SELECT * FROM test_null");
assertTrue(resultSet.next());
assertNull(resultSet.getCharacterStream(1));
}
}