DATAREDIS-471 - Add support for partial updates. #191

christophstrobl · 2016-04-25T09:12:22Z

We now allow partial update of domain types via PartialUpdate. The according expiration times and secondary index structures are updated accordingly.

In some cases it is not necessary to load and rewrite the entire entity just to set a new value within it. A session timestamp for last active time might be such a scenario where you just want to alter one property.
PartialUpdate allows to define set, delete actions on existing objects while taking care of updating potential expiration times of the entity itself as well as index structures.

PartialUpdate<Person> update = new PartialUpdate<Person>("e2c7dcee", Person.class)
  .set("firstname", "mat")                                                           <1>
  .set("address.city", "emond's field")                                              <2>
  .del("age");                                                                       <3>

template.update(update);

update = new PartialUpdate<Person>("e2c7dcee", Person.class)
  .set("address", new Address("caemlyn", "andor"))                                   <4>
  .set("attributes", singletonMap("eye-color", "grey"));                             <5>

template.update(update);

update = new PartialUpdate<Person>("e2c7dcee", Person.class)
  .refreshTtl(true);                                                                 <6>
  .set("expiration", 1000);

template.update(update);

<1> Set the simple property _firstname_ to _mat_
<2> Set the simple property _address.city_ to _emond's field_ without having to pass in the entire object. This does not work when a custom conversion is registered.
<3> Remove the property _age_.
<4> Set complex property _address_.
<5> Set a map/collection of values removes the previously existing map/collection and replaces the values with the given ones.
<6> Automatically update the server expiration time when altering time to live.

NOTE: Updating complex objects as well as map/collection structures requires further interaction with Redis to determine existing values which means that it might turn out that rewriting the entire entity might be faster.

mp911de · 2016-05-03T07:41:57Z

src/main/java/org/springframework/data/redis/core/PartialUpdate.java

+	public PartialUpdate<T> del(String path) {
+
+		Assert.hasText(path, "Path to remove must not be null or empty!");
+		propertyUpdates.add(new PropertyUpdate(UpdateCommand.DEL, path));


PartialUpdate changes its own state and creates a new instance.

mp911de · 2016-05-09T15:16:33Z

src/main/java/org/springframework/data/redis/core/RedisKeyValueAdapter.java

@@ -393,6 +394,109 @@ public Long doInRedis(RedisConnection connection) throws DataAccessException {
 		return count != null ? count.longValue() : 0;
 	}

+	public void update(final PartialUpdate<?> update) {


Old index references remain in index-helper index (entity):(key):idx when updating/deleting @Indexed properties

Prepare issue branch.

We now allow partial update of domain types via PartialUpdate. The according expiration times and secondary index structures are updated accordingly. In some cases it is not necessary to load and rewrite the entire entity just to set a new value within it. A session timestamp for last active time might be such a scenario where you just want to alter one property. `PartialUpdate` allows to define `set`, `delete` actions on existing objects while taking care of updating potential expiration times of the entity itself as well as index structures. .Sample Partial Update ==== [source,java] ---- PartialUpdate<Person> update = new PartialUpdate<Person>("e2c7dcee", Person.class) .set("firstname", "mat") <1> .set("address.city", "emond's field") <2> .del("age"); <3> template.update(update); update = new PartialUpdate<Person>("e2c7dcee", Person.class) .set("address", new Address("caemlyn", "andor")) <4> .set("attributes", singletonMap("eye-color", "grey")); <5> template.update(update); update = new PartialUpdate<Person>("e2c7dcee", Person.class) .refreshTtl(true); <6> .set("expiration", 1000); template.update(update); ---- <1> Set the simple property _firstname_ to _mat_ <2> Set the simple property _address.city_ to _emond's field_ without having to pass in the entire object. This does not work when a custom conversion is registered. <3> Remove the property _age_. <4> Set complex property _address_. <5> Set a map/collection of values removes the previously existing map/collection and replaces the values with the given ones. <6> Automatically update the server expiration time when altering time to live. ==== NOTE: Updating complex objects as well as map/collection structures requires further interaction with Redis to determine existing values which means that it might turn out that rewriting the entire entity might be faster. Original pull request: #191.

Update reference documentation. Enhance JavaDoc. Remove destroy of managed bean. Refactor property update of writePartialUpdate into own method. Remove trailing whitespaces in JavaDoc. Original pull request: #191.

We now allow partial update of domain types via PartialUpdate. The according expiration times and secondary index structures are updated accordingly. In some cases it is not necessary to load and rewrite the entire entity just to set a new value within it. A session timestamp for last active time might be such a scenario where you just want to alter one property. `PartialUpdate` allows to define `set`, `delete` actions on existing objects while taking care of updating potential expiration times of the entity itself as well as index structures. .Sample Partial Update ==== [source,java] ---- PartialUpdate<Person> update = new PartialUpdate<Person>("e2c7dcee", Person.class) .set("firstname", "mat") <1> .set("address.city", "emond's field") <2> .del("age"); <3> template.update(update); update = new PartialUpdate<Person>("e2c7dcee", Person.class) .set("address", new Address("caemlyn", "andor")) <4> .set("attributes", singletonMap("eye-color", "grey")); <5> template.update(update); update = new PartialUpdate<Person>("e2c7dcee", Person.class) .refreshTtl(true); <6> .set("expiration", 1000); template.update(update); ---- <1> Set the simple property _firstname_ to _mat_ <2> Set the simple property _address.city_ to _emond's field_ without having to pass in the entire object. This does not work when a custom conversion is registered. <3> Remove the property _age_. <4> Set complex property _address_. <5> Set a map/collection of values removes the previously existing map/collection and replaces the values with the given ones. <6> Automatically update the server expiration time when altering time to live. ==== NOTE: Updating complex objects as well as map/collection structures requires further interaction with Redis to determine existing values which means that it might turn out that rewriting the entire entity might be faster. Original pull request: #191.

Update reference documentation. Enhance JavaDoc. Remove destroy of managed bean. Refactor property update of writePartialUpdate into own method. Remove trailing whitespaces in JavaDoc. Original pull request: #191.

mp911de · 2016-05-25T13:47:57Z

That's merged with addcdfe.

We now allow partial update of domain types via PartialUpdate. The according expiration times and secondary index structures are updated accordingly. In some cases it is not necessary to load and rewrite the entire entity just to set a new value within it. A session timestamp for last active time might be such a scenario where you just want to alter one property. `PartialUpdate` allows to define `set`, `delete` actions on existing objects while taking care of updating potential expiration times of the entity itself as well as index structures. .Sample Partial Update ==== [source,java] ---- PartialUpdate<Person> update = new PartialUpdate<Person>("e2c7dcee", Person.class) .set("firstname", "mat") <1> .set("address.city", "emond's field") <2> .del("age"); <3> template.update(update); update = new PartialUpdate<Person>("e2c7dcee", Person.class) .set("address", new Address("caemlyn", "andor")) <4> .set("attributes", singletonMap("eye-color", "grey")); <5> template.update(update); update = new PartialUpdate<Person>("e2c7dcee", Person.class) .refreshTtl(true); <6> .set("expiration", 1000); template.update(update); ---- <1> Set the simple property _firstname_ to _mat_ <2> Set the simple property _address.city_ to _emond's field_ without having to pass in the entire object. This does not work when a custom conversion is registered. <3> Remove the property _age_. <4> Set complex property _address_. <5> Set a map/collection of values removes the previously existing map/collection and replaces the values with the given ones. <6> Automatically update the server expiration time when altering time to live. ==== NOTE: Updating complex objects as well as map/collection structures requires further interaction with Redis to determine existing values which means that it might turn out that rewriting the entire entity might be faster. Original pull request: #191.

Update reference documentation. Enhance JavaDoc. Remove destroy of managed bean. Refactor property update of writePartialUpdate into own method. Remove trailing whitespaces in JavaDoc. Original pull request: #191.

mp911de reviewed May 3, 2016
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christophstrobl force-pushed the issue/DATAREDIS-471 branch from 296acd0 to fb29ee3 Compare May 4, 2016 07:46

mp911de reviewed May 9, 2016
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christophstrobl force-pushed the issue/DATAREDIS-471 branch from f35ef8a to 51c17ca Compare May 10, 2016 09:33

christophstrobl and others added 3 commits May 24, 2016 15:30

DATAREDIS-471 - Add support for partial updates.

bde376e

Prepare issue branch.

DATAREDIS-471 - Polishing.

7209513

Update reference documentation. Enhance JavaDoc. Remove destroy of managed bean. Refactor property update of writePartialUpdate into own method. Remove trailing whitespaces in JavaDoc. Original pull request: #191.

mp911de force-pushed the issue/DATAREDIS-471 branch from 51c17ca to 7209513 Compare May 24, 2016 14:31

mp911de closed this May 25, 2016

spring-projects-issues mentioned this pull request Dec 30, 2020

Incremental updates for Redis KeyValue Template [DATAREDIS-471] #1050

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DATAREDIS-471 - Add support for partial updates. #191

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christophstrobl commented Apr 25, 2016 •

edited by mp911de

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