Package io.debezium.connector.oracle.logminer

Class LogMinerQueryBuilder

java.lang.Object

io.debezium.connector.oracle.logminer.LogMinerQueryBuilder

public class LogMinerQueryBuilder
extends Object

A builder that is responsible for producing the query to be executed against the LogMiner view.

Author:

Chris Cranford

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	LOGMNR_CONTENTS_VIEW

Constructor Summary

Constructors

Constructor	Description
LogMinerQueryBuilder()

Method Summary

Modifier and Type	Method	Description
static String	build(OracleConnectorConfig connectorConfig)	Builds the LogMiner contents view query.
private static String	resolveExcludedSchemaPredicate(String fieldName)	Resolve the built-in excluded schemas predicate.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

LOGMNR_CONTENTS_VIEW

private static final String LOGMNR_CONTENTS_VIEW

See Also:

• Constant Field Values

Constructor Details

LogMinerQueryBuilder

public LogMinerQueryBuilder()

Method Details

build

public static String build(OracleConnectorConfig connectorConfig)

Builds the LogMiner contents view query. The returned query will contain 2 bind parameters that the caller is responsible for binding before executing the query. The first bind parameter is the lower-bounds of the SCN mining window that is not-inclusive while the second is the upper-bounds of the SCN mining window that is inclusive. The built query relies on the following columns from V$LOGMNR_CONTENTS:

     SCN - the system change number at which the change was made
     SQL_REDO - the reconstructed SQL statement that initiated the change
     OPERATION - the database operation type name
     OPERATION_CODE - the database operation numeric code
     TIMESTAMP - the time when the change event occurred
     XID - the transaction identifier the change participated in
     CSF - the continuation flag, identifies rows that should be processed together as single row, 0=no, 1=yes
     TABLE_NAME - the name of the table for which the change is for
     SEG_OWNER - the name of the schema for which the change is for
     USERNAME - the name of the database user that caused the change
     ROW_ID - the unique identifier of the row that the change is for, may not always be set with valid value
     ROLLBACK - the rollback flag, value of 0 or 1.  1 implies the row was rolled back
     RS_ID - the rollback segment idenifier where the change record was record from
 

Parameters:

connectorConfig - connector configuration, should not be null

Returns:

the SQL string to be used to fetch changes from Oracle LogMiner

resolveExcludedSchemaPredicate

private static String resolveExcludedSchemaPredicate(String fieldName)

Resolve the built-in excluded schemas predicate.

Parameters:

fieldName - the query field name the predicate applies to, should never be null

Returns:

the predicate