Shadow

Definition

CREATE SHADOW RULE shadowRuleDefinition [, shadowRuleDefinition] ... 

ALTER SHADOW RULE shadowRuleDefinition [, shadowRuleDefinition] ... 

ALTER SHADOW ALGORITHM shadowAlgorithm [, shadowAlgorithm] ...

DROP SHADOW RULE ruleName [, ruleName] ...

DROP SHADOW ALGORITHM algorithmName [, algorithmName] ...

shadowRuleDefinition: ruleName(resourceMapping, shadowTableRule [, shadowTableRule] ...)

resourceMapping: SOURCE=resourceName, SHADOW=resourceName

shadowTableRule: tableName(shadowAlgorithm [, shadowAlgorithm] ...)

shadowAlgorithm: ([algorithmName, ] TYPE(NAME=shadowAlgorithmType, PROPERTIES([algorithmProperties] ...)))

algorithmProperties: algorithmProperty [, algorithmProperty] ... 

algorithmProperty: key=value
  • Duplicate ruleName cannot be created
  • resourceMapping specifies the mapping relationship between the source database and the shadow library. You need to use the resource managed by RDL, please refer to resource
  • shadowAlgorithm can act on multiple shadowTableRule at the same time
  • If algorithmName is not specified, it will be automatically generated according to ruleName, tableName and shadowAlgorithmType
  • shadowAlgorithmType currently supports COLUMN_REGEX_MATCH and SIMPLE_NOTE
  • shadowTableRule can be reused by different shadowRuleDefinition, so when executing DROP SHADOW RULE, the corresponding shadowTableRule will not be removed
  • shadowAlgorithm can be reused by different shadowTableRule, so when executing ALTER SHADOW RULE, the corresponding shadowAlgorithm will not be removed

Example

CREATE SHADOW RULE shadow_rule(
SOURCE=demo_ds,
SHADOW=demo_ds_shadow,
t_order((simple_note_algorithm, TYPE(NAME=SIMPLE_NOTE, PROPERTIES("shadow"="true", foo="bar"))),(TYPE(NAME=COLUMN_REGEX_MATCH, PROPERTIES("operation"="insert","column"="user_id", "regex"='[1]')))), 
t_order_item((TYPE(NAME=SIMPLE_NOTE, PROPERTIES("shadow"="true", "foo"="bar")))));

ALTER SHADOW RULE shadow_rule(
SOURCE=demo_ds,
SHADOW=demo_ds_shadow,
t_order((simple_note_algorithm, TYPE(NAME=SIMPLE_NOTE, PROPERTIES("shadow"="true", foo="bar"))),(TYPE(NAME=COLUMN_REGEX_MATCH, PROPERTIES("operation"="insert","column"="user_id", "regex"='[1]')))), 
t_order_item((TYPE(NAME=SIMPLE_NOTE, PROPERTIES("shadow"="true", "foo"="bar")))));

ALTER SHADOW ALGORITHM 
(simple_note_algorithm, TYPE(NAME=SIMPLE_NOTE, PROPERTIES("shadow"="true", "foo"="bar"))), 
(user_id_match_algorithm, TYPE(NAME=COLUMN_REGEX_MATCH,PROPERTIES("operation"="insert", "column"="user_id", "regex"='[1]')));

DROP SHADOW RULE shadow_rule;

DROP SHADOW ALGORITHM simple_note_algorithm;