toolkit.db.queryoptimization
Interface Optimizer

public interface Optimizer

Interface Optimizer wraps information returned from query optimizer.

getOptimizedSqlString

java.lang.String getOptimizedSqlString()

Gets the optimized sql statement.

Returns:

the optimized sql statement.

getColumnInfos

java.util.List<ColumnInfo> getColumnInfos()

Gets the column information. Each column information contains a mapping name and column index of where this column should appear in Select clause of the sql string. 1 means the first one, 2 means the second one, etc. -1 means uncertain and it may be decided by the real resultset meta data. Refer to ColumnInfo.

shouldBeCanceled

boolean shouldBeCanceled()

Gets the flag whether JReport should cancel the SQL statement execution.

Returns:

the optimized sql statement.

getCancelMessage

java.lang.String getCancelMessage()

Gets the cancelled message.

Returns:

the cancelled message.