Merge pull request #1848 from ClickHouse/pre_0.7.0

Pre 0.7.0

Author: chernser

.github/workflows/nightly.yml

@@ -12,7 +12,7 @@ on:
 
 env:
   CHC_BRANCH: "main"
-  CHC_VERSION: "0.6.5"
+  CHC_VERSION: "0.7.0"
 
 jobs:
   nightly:

.github/workflows/release.yml

@@ -6,7 +6,7 @@ on:
       version:
         description: "Release version"
         required: true
-        default: "0.6.5-SNAPSHOT"
+        default: "0.7.0-SNAPSHOT"
 
 jobs:
   release:

CHANGELOG.md

@@ -1,5 +1,52 @@
 ## Latest
 
+## 0.7.0
+
+### Deprecations
+- Following deprecated components are removed:
+  - clickhouse-cli-client
+  - clickhouse-grpc-client
+
+### Important Changes
+- [client-v2] New transport layer implementation is used by default. It is still possible to switch back 
+using old implementation by setting `com.clickhouse.client.api.Client.Builder#useNewImplementation` to `false`. (https://github.com/ClickHouse/clickhouse-java/pull/1847)
+
+### New Features
+- [client-v2] Now there is an easy way to set custom HTTP headers globally for client and per operation. 
+See `com.clickhouse.client.api.Client.Builder.httpHeader(java.lang.String, java.lang.String)` for details. (https://github.com/ClickHouse/clickhouse-java/issues/1782)
+- [client-v2] Now there is a way to set any server settings globally for client and per operation.
+See `com.clickhouse.client.api.Client.Builder.serverSetting(java.lang.String, java.lang.String)` for details. (https://github.com/ClickHouse/clickhouse-java/issues/1782)
+- [client-v2] Added support for writing AggregateFunction values (bitmap serialization). !! Reading is not 
+supported but will be added in the next release. (https://github.com/ClickHouse/clickhouse-java/pull/1814)
+- [r2dbc] Defer connection creation. This allows pool to create a new instance on every subscription, 
+instead of always returning the same one. (https://github.com/ClickHouse/clickhouse-java/pull/1810) 
+
+### Performance Improvements
+- [client-v2] Improved reading fixed length data like numbers. It is possible to configure readers to 
+use pre-allocated buffers to avoid memory allocation for each data row/block. Significantly reduces GC pressure.
+See `com.clickhouse.client.api.Client.Builder.allowBinaryReaderToReuseBuffers` for details. (https://github.com/ClickHouse/clickhouse-java/pull/1816)
+- [client-v2] New API method introduced to read data directly to a POJO. Deserializers for POJO classes are compiled into 
+bytecode (with help of https://asm.ow2.io/ library) and optimized for each schema. It is great performance boost 
+because data is read without copying it into temporary structures. Code can be optimized by JVM while runtime as SerDe 
+code is implemented without reflection using JVM bytecode. Using bytecode makes handling primitive types without values boxing. (https://github.com/ClickHouse/clickhouse-java/pull/1794, 
+https://github.com/ClickHouse/clickhouse-java/pull/1826)
+- [client-v2] Optimized reading columns - internally data is read into map of column-values. It is done 
+to allow reading same column more than once. Previously map was cleared each row what caused a lot 
+internal objects creation. Now values are overridden because schema doesn't change between rows. (https://github.com/ClickHouse/clickhouse-java/pull/1795)
+
+### Documentation
+- [client-v2] Added example for Kotlin (https://github.com/ClickHouse/clickhouse-java/pull/1793)
+- [doc] Main documentation on official ClickHouse website is updated. Each client has its own page with detailed information now. 
+Added documentation for the Client V2. See https://clickhouse.com/docs/en/integrations/java.
+
+### Bug Fixes
+- [client-v2] Fix for cases when missing operation metrics were causing NPE. (https://github.com/ClickHouse/clickhouse-java/pull/1846)
+- [client-v2] Fix for handling empty result by BinaryFormat readers. (https://github.com/ClickHouse/clickhouse-java/pull/1845)
+- [jdbc] Content of an artifact 'clickhouse-jdbc-{version}-all.jar' is fixed and contains all required classes from `clickhouse-client` 
+and `clickhouse-data`. (https://github.com/ClickHouse/clickhouse-java/pull/1842)
+- [client-v1, jdbc] Endpoints definition parsing fixed to grub properties correctly. Now even properties with key-value 
+pairs are supported. (https://github.com/ClickHouse/clickhouse-java/pull/1841, https://github.com/ClickHouse/clickhouse-java/issues/1665)
+
 ## 0.6.5
 
 ### Deprecations

examples/client-v2/pom.xml

@@ -64,7 +64,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
-        <clickhouse-java.version>0.6.5-SNAPSHOT</clickhouse-java.version>
+        <clickhouse-java.version>0.7.0-SNAPSHOT</clickhouse-java.version>
         <apache-httpclient.version>5.2.1</apache-httpclient.version>
 
         <compiler-plugin.version>3.8.1</compiler-plugin.version>

examples/client/pom.xml

@@ -66,9 +66,9 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
-        <clickhouse-java.version>0.6.5-SNAPSHOT</clickhouse-java.version>
+        <clickhouse-java.version>0.7.0-SNAPSHOT</clickhouse-java.version>
         <!-- Nightly snapshot version from https://s01.oss.sonatype.org/content/repositories/snapshots/ or latest from local -->
-<!--        <clickhouse-java.version>0.6.4-SNAPSHOT</clickhouse-java.version>-->
+<!--        <clickhouse-java.version>0.7.0-SNAPSHOT</clickhouse-java.version>-->
 
         <apache-httpclient.version>5.2.1</apache-httpclient.version>
 

examples/demo-kotlin-service/build.gradle.kts

@@ -33,7 +33,7 @@ dependencies {
     implementation("io.ktor:ktor-serialization-kotlinx-json:$ktor_version")
 
     // https://mvnrepository.com/artifact/com.clickhouse/client-v2
-    implementation("com.clickhouse:client-v2:0.6.5-SNAPSHOT")
+    implementation("com.clickhouse:client-v2:0.7.0-SNAPSHOT")
 
     // http client used by clickhouse client
     implementation("org.apache.httpcomponents.client5:httpclient5:5.3.1")

examples/demo-service/build.gradle.kts

@@ -29,7 +29,7 @@ dependencies {
 
 	// -- clickhouse dependencies
 	// Main dependency
-	implementation("com.clickhouse:client-v2:0.6.5-SNAPSHOT") // nightly build
+	implementation("com.clickhouse:client-v2:0.7.0-SNAPSHOT") // nightly build
 //	implementation("com.clickhouse:client-v2:0.6.5") // stable version
 	// http client used by clickhouse client
 	implementation("org.apache.httpcomponents.client5:httpclient5:5.3.1")

examples/jdbc/pom.xml

@@ -66,7 +66,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
-        <clickhouse-java.version>0.6.5-SNAPSHOT</clickhouse-java.version>
+        <clickhouse-java.version>0.7.0-SNAPSHOT</clickhouse-java.version>
         <hikaricp.version>4.0.3</hikaricp.version>
         <apache-httpclient.version>5.2.1</apache-httpclient.version>
 

examples/r2dbc/clickhouse-r2dbc-spring-webflux-sample/pom.xml

@@ -14,7 +14,7 @@
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <clickhouse-java.version>0.6.0</clickhouse-java.version>
+        <clickhouse-java.version>0.7.0-SNAPSHOT</clickhouse-java.version>
         <spring-boot-starter.version>2.7.18</spring-boot-starter.version>
     </properties>
 

pom.xml

@@ -79,7 +79,7 @@
     </distributionManagement>
 
     <properties>
-        <revision>0.6.5-SNAPSHOT</revision>
+        <revision>0.7.0-SNAPSHOT</revision>
         <project.current.year>2024</project.current.year>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>