io.debezium.connector.oracle.logminer

Class SqlUtils

java.lang.Object

io.debezium.connector.oracle.logminer.SqlUtils

class SqlUtils
extends Object

This utility class contains SQL statements to configure, manage and query Oracle LogMiner

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static String	ALL_ONLINE_LOGS
(package private) static String	AUDIT_TABLE_EXISTS
(package private) static String	AUDIT_TABLE_RECORD_EXISTS
(package private) static String	BUILD_DICTIONARY
(package private) static String	CREATE_AUDIT_TABLE
(package private) static String	CURRENT_REDO_LOG_NAME
(package private) static String	CURRENT_SCN
(package private) static String	CURRENT_TIMESTAMP
(package private) static String	END_LOGMNR
(package private) static String	INSERT_AUDIT_TABLE
private static org.slf4j.Logger	LOGGER
private static String	LOGMNR_AUDIT_TABLE
private static String	LOGMNR_CONTENTS_VIEW
(package private) static String	NLS_SESSION_PARAMETERS
(package private) static String	OLDEST_FIRST_CHANGE
(package private) static String	REDO_LOGS_STATUS
(package private) static String	SWITCH_HISTORY_TOTAL_COUNT
(package private) static String	UPDATE_AUDIT_TABLE

Constructor Summary

Constructors

Constructor and Description
SqlUtils()

Method Summary

Modifier and Type	Method and Description
private static String	buildTableInPredicate(List<String> tables) This method builds table_name IN predicate, filtering out non whitelisted tables from Log Mining.
(package private) static String	getAddLogFileStatement(String option, String fileName)
(package private) static String	getStartLogMinerStatement(Long startScn, Long endScn, OracleConnectorConfig.LogMiningStrategy strategy, boolean isContinuousMining) This returns statement to build log miner view for online redo log files
(package private) static String	queryLogMinerContents(String schemaName, String logMinerUser, OracleDatabaseSchema schema) This is the query from the log miner view to get changes.

Methods inherited from class java.lang.Object

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

Field Detail

LOGMNR_CONTENTS_VIEW

private static final String LOGMNR_CONTENTS_VIEW

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Constant Field Values

LOGMNR_AUDIT_TABLE

private static final String LOGMNR_AUDIT_TABLE

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Constant Field Values

BUILD_DICTIONARY

static final String BUILD_DICTIONARY

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Constant Field Values

CURRENT_SCN

static final String CURRENT_SCN

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Constant Field Values

CURRENT_TIMESTAMP

static final String CURRENT_TIMESTAMP

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Constant Field Values

END_LOGMNR

static final String END_LOGMNR

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Constant Field Values

OLDEST_FIRST_CHANGE

static final String OLDEST_FIRST_CHANGE

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Constant Field Values

ALL_ONLINE_LOGS

static final String ALL_ONLINE_LOGS

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Constant Field Values

REDO_LOGS_STATUS

static final String REDO_LOGS_STATUS

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Constant Field Values

SWITCH_HISTORY_TOTAL_COUNT

static final String SWITCH_HISTORY_TOTAL_COUNT

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Constant Field Values

CURRENT_REDO_LOG_NAME

static final String CURRENT_REDO_LOG_NAME

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Constant Field Values

AUDIT_TABLE_EXISTS

static final String AUDIT_TABLE_EXISTS

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Constant Field Values

AUDIT_TABLE_RECORD_EXISTS

static final String AUDIT_TABLE_RECORD_EXISTS

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Constant Field Values

CREATE_AUDIT_TABLE

static final String CREATE_AUDIT_TABLE

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Constant Field Values

INSERT_AUDIT_TABLE

static final String INSERT_AUDIT_TABLE

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Constant Field Values

UPDATE_AUDIT_TABLE

static final String UPDATE_AUDIT_TABLE

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Constant Field Values

LOGGER

private static final org.slf4j.Logger LOGGER

NLS_SESSION_PARAMETERS

static final String NLS_SESSION_PARAMETERS

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Constant Field Values

Constructor Detail

SqlUtils

SqlUtils()

Method Detail

getStartLogMinerStatement

static String getStartLogMinerStatement(Long startScn,
                                        Long endScn,
                                        OracleConnectorConfig.LogMiningStrategy strategy,
                                        boolean isContinuousMining)

This returns statement to build log miner view for online redo log files

Parameters:

startScn - mine from

endScn - mine till

strategy - Log Mining strategy

Returns:

statement todo: handle corruption. STATUS (Double) — value of 0 indicates it is executable

queryLogMinerContents

static String queryLogMinerContents(String schemaName,
                                    String logMinerUser,
                                    OracleDatabaseSchema schema)

This is the query from the log miner view to get changes. Columns of the view we using are: NOTE. Currently we do not capture changes from other schemas SCN - The SCN at which a change was made COMMIT_SCN - The SCN at which a change was committed USERNAME - Name of the user who executed the transaction SQL_REDO Reconstructed SQL statement that is equivalent to the original SQL statement that made the change OPERATION_CODE - Number of the operation code. TABLE_NAME - Name of the modified table TIMESTAMP - Timestamp when the database change was made

Parameters:

schemaName - user name

logMinerUser - log mining session user name

schema - schema

Returns:

the query

getAddLogFileStatement

static String getAddLogFileStatement(String option,
                                     String fileName)

buildTableInPredicate

private static String buildTableInPredicate(List<String> tables)

This method builds table_name IN predicate, filtering out non whitelisted tables from Log Mining. It limits joining condition over 1000 tables, Oracle will throw exception in such predicate.

Parameters:

tables - white listed table names

Returns:

IN predicate or empty string if number of whitelisted tables exceeds 1000