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Fixed the issue where prepareStatement did not support the Blob type.When the ResultSet is empty, an SQL exception should be thrown #17364

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Fixed the issue where prepareStatement did not support the Blob type.When the ResultSet is empty, an SQL exception should be thrown #17364

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1c0367b
prepareStatement不支持Blob类型问题修复
Mar 26, 2026
0846dd1
ResultSet为空时抛出SQL异常修复
Mar 26, 2026
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11 changes: 9 additions & 2 deletions iotdb-client/jdbc/src/main/java/org/apache/iotdb/jdbc/IoTDBJDBCResultSet.java
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Original file line number Diff line number Diff line change
Expand Up @@ -231,8 +231,15 @@ public void deleteRow() throws SQLException {
}

@Override
public int findColumn(String columnName) {
return ioTDBRpcDataSet.findColumn(columnName);
public int findColumn(String columnName) throws SQLException {
if (isClosed()) {
throw new SQLException("ResultSet is closed");
}
try {
return ioTDBRpcDataSet.findColumn(columnName);
} catch (NullPointerException e) {
throw new SQLException("Column '" + columnName + "' not found");
}
}

@Override
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10 changes: 9 additions & 1 deletion iotdb-client/jdbc/src/main/java/org/apache/iotdb/jdbc/IoTDBPreparedStatement.java
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Expand Up @@ -257,7 +257,15 @@ public void setBinaryStream(int parameterIndex, InputStream x, long length) thro

@Override
public void setBlob(int parameterIndex, Blob x) throws SQLException {
throw new SQLException(Constant.PARAMETER_SUPPORTED);
if (x == null) {
setNull(parameterIndex, Types.BLOB);
} else {
try {
setBytes(parameterIndex, x.getBytes(1, (int) x.length()));
} catch (SQLException e) {
throw new SQLException("Failed to read Blob data: " + e.getMessage(), e);
}
}
}

@Override
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11 changes: 10 additions & 1 deletion iotdb-client/jdbc/src/main/java/org/apache/iotdb/jdbc/IoTDBTablePreparedStatement.java
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Expand Up @@ -568,7 +568,16 @@ public void setBinaryStream(int parameterIndex, InputStream x, long length) thro

@Override
public void setBlob(int parameterIndex, Blob x) throws SQLException {
throw new SQLException(Constant.PARAMETER_SUPPORTED);
checkParameterIndex(parameterIndex);
if (x == null) {
setNull(parameterIndex, Types.BLOB);
} else {
try {
setBytes(parameterIndex, x.getBytes(1, (int) x.length()));
} catch (SQLException e) {
throw new SQLException("Failed to read Blob data: " + e.getMessage(), e);
}
}
}

@Override
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