class-based-sharding-spring-boot-jpa-example (apache#18856)

* class-based-sharding-spring-boot-jpa-example

* Delete application-sharding-auto-tables.properties

* blank lines

* class-based

* corrections

* Create ClassBasedDataSourceStandardShardingAlgorithmFixture.java

* Create ClassBasedOrderItemStandardShardingAlgorithmFixture.java

* Update and rename examples/shardingsphere-jdbc-example/single-feature-example/extension-example/custom-sharding-algortihm-example/class-based-sharding-algorithm-example/class-based-sharding-spring-boot-jpa-example/src/main/java/org/apache/shardingsphere/example/extension/classbased/sharding/spring/boot/jpa/ClassBasedDataSourceStandardShardingAlgorithmFixture.java to examples/shardingsphere-jdbc-example/single-feature-example/extension-example/custom-sharding-algortihm-example/class-based-sharding-algorithm-example/class-based-sharding-spring-boot-jpa-example/src/main/java/org/apache/shardingsphere/example/extension/classbased/sharding/spring/boot/jpa/fixture/ClassBasedDataSourceStandardShardingAlgorithmFixture.java

* Create ClassBasedOrderStandardShardingAlgorithmFixture.java

examples/shardingsphere-jdbc-example/single-feature-example/extension-example/custom-sharding-algortihm-example/class-based-sharding-algorithm-example/class-based-sharding-spring-boot-jpa-example/pom.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.shardingsphere.example</groupId>
+        <artifactId>class-based-sharding-algorithm-example</artifactId>
+        <version>${revision}</version>
+    </parent>
+    <artifactId>class-based-sharding-spring-boot-jpa-example</artifactId>
+    <name>${project.artifactId}</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.shardingsphere.example</groupId>
+            <artifactId>example-spring-jpa</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.shardingsphere</groupId>
+            <artifactId>shardingsphere-jdbc-core-spring-boot-starter</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+        </dependency>
+    </dependencies>
+</project>

examples/shardingsphere-jdbc-example/single-feature-example/extension-example/custom-sharding-algortihm-example/class-based-sharding-algorithm-example/class-based-sharding-spring-boot-jpa-example/src/main/java/org/apache/shardingsphere/example/extension/classbased/sharding/spring/boot/jpa/ClassBasedShardingSpringBootJpaExample.java

@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.shardingsphere.example.extension.classbased.sharding.spring.boot.jpa;
+
+import org.apache.shardingsphere.example.core.api.ExampleExecuteTemplate;
+import org.apache.shardingsphere.example.core.api.service.ExampleService;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.boot.autoconfigure.transaction.jta.JtaAutoConfiguration;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.context.annotation.ComponentScan;
+
+import java.sql.SQLException;
+
+@ComponentScan("org.apache.shardingsphere.example.core.jpa")
+@EntityScan(basePackages = "org.apache.shardingsphere.example.core.jpa.entity")
+@SpringBootApplication(exclude = JtaAutoConfiguration.class)
+public class ClassBasedShardingSpringBootJpaExample {
+
+    public static void main(final String[] args) throws SQLException {
+        try (ConfigurableApplicationContext applicationContext = SpringApplication.run(ClassBasedShardingSpringBootJpaExample.class, args)) {
+            ExampleExecuteTemplate.run(applicationContext.getBean(ExampleService.class));
+        }
+    }
+}

examples/shardingsphere-jdbc-example/single-feature-example/extension-example/custom-sharding-algortihm-example/class-based-sharding-algorithm-example/class-based-sharding-spring-boot-jpa-example/src/main/java/org/apache/shardingsphere/example/extension/classbased/sharding/spring/boot/jpa/fixture/ClassBasedDataSourceStandardShardingAlgorithmFixture.java

@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.shardingsphere.example.extension.classbased.sharding.spring.boot.jpa.fixture;
+
+import com.google.common.base.Preconditions;
+import com.google.common.primitives.Ints;
+import lombok.Getter;
+import org.apache.shardingsphere.sharding.api.sharding.standard.PreciseShardingValue;
+import org.apache.shardingsphere.sharding.api.sharding.standard.RangeShardingValue;
+import org.apache.shardingsphere.sharding.api.sharding.standard.StandardShardingAlgorithm;
+
+import java.util.Collection;
+import java.util.Properties;
+
+public final class ClassBasedDataSourceStandardShardingAlgorithmFixture implements StandardShardingAlgorithm<Integer> {
+
+    private static final String SHARDING_COUNT = "sharding-count";
+
+    @Getter
+    private Properties props;
+
+    private Integer shardingCount;
+
+    @Override
+    public void init(final Properties props) {
+        this.props = props;
+        Preconditions.checkArgument(props.containsKey(SHARDING_COUNT), "%s can not be null.", SHARDING_COUNT);
+        shardingCount = Ints.tryParse(props.getProperty(SHARDING_COUNT));
+        Preconditions.checkArgument(null != shardingCount, "%s is not valid.", SHARDING_COUNT);
+    }
+
+    @Override
+    public String doSharding(final Collection<String> availableTargetNames, final PreciseShardingValue<Integer> shardingValue) {
+        for (String each : availableTargetNames) {
+            if (each.endsWith(String.valueOf(shardingValue.getValue() % shardingCount))) {
+                return each;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public Collection<String> doSharding(final Collection<String> availableTargetNames, final RangeShardingValue<Integer> shardingValue) {
+        return availableTargetNames;
+    }
+}

examples/shardingsphere-jdbc-example/single-feature-example/extension-example/custom-sharding-algortihm-example/class-based-sharding-algorithm-example/class-based-sharding-spring-boot-jpa-example/src/main/java/org/apache/shardingsphere/example/extension/classbased/sharding/spring/boot/jpa/fixture/ClassBasedOrderItemStandardShardingAlgorithmFixture.java

@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.shardingsphere.example.extension.classbased.sharding.spring.boot.jpa.fixture;
+
+import com.google.common.base.Preconditions;
+import com.google.common.primitives.Ints;
+import lombok.Getter;
+import org.apache.shardingsphere.sharding.api.sharding.standard.PreciseShardingValue;
+import org.apache.shardingsphere.sharding.api.sharding.standard.RangeShardingValue;
+import org.apache.shardingsphere.sharding.api.sharding.standard.StandardShardingAlgorithm;
+
+import java.util.Collection;
+import java.util.Properties;
+
+public final class ClassBasedOrderItemStandardShardingAlgorithmFixture implements StandardShardingAlgorithm<Long> {
+
+    private static final String SHARDING_COUNT = "sharding-count";
+
+    @Getter
+    private Properties props;
+
+    private Integer shardingCount;
+
+    @Override
+    public void init(final Properties props) {
+        this.props = props;
+        Preconditions.checkArgument(props.containsKey(SHARDING_COUNT), "%s can not be null.", SHARDING_COUNT);
+        shardingCount = Ints.tryParse(props.getProperty(SHARDING_COUNT));
+        Preconditions.checkArgument(null != shardingCount, "%s is not valid.", SHARDING_COUNT);
+    }
+
+    @Override
+    public String doSharding(final Collection<String> availableTargetNames, final PreciseShardingValue<Long> shardingValue) {
+        for (String each : availableTargetNames) {
+            if (each.endsWith(String.valueOf(shardingValue.getValue() % shardingCount))) {
+                return each;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public Collection<String> doSharding(final Collection<String> availableTargetNames, final RangeShardingValue<Long> shardingValue) {
+        return availableTargetNames;
+    }
+}

examples/shardingsphere-jdbc-example/single-feature-example/extension-example/custom-sharding-algortihm-example/class-based-sharding-algorithm-example/class-based-sharding-spring-boot-jpa-example/src/main/java/org/apache/shardingsphere/example/extension/classbased/sharding/spring/boot/jpa/fixture/ClassBasedOrderStandardShardingAlgorithmFixture.java

@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.shardingsphere.example.extension.classbased.sharding.spring.boot.jpa.fixture;
+
+import com.google.common.base.Preconditions;
+import com.google.common.primitives.Ints;
+import lombok.Getter;
+import org.apache.shardingsphere.sharding.api.sharding.standard.PreciseShardingValue;
+import org.apache.shardingsphere.sharding.api.sharding.standard.RangeShardingValue;
+import org.apache.shardingsphere.sharding.api.sharding.standard.StandardShardingAlgorithm;
+
+import java.util.Collection;
+import java.util.Properties;
+
+public final class ClassBasedOrderStandardShardingAlgorithmFixture implements StandardShardingAlgorithm<Long> {
+
+    private static final String SHARDING_COUNT = "sharding-count";
+
+    @Getter
+    private Properties props;
+
+    private Integer shardingCount;
+
+    @Override
+    public void init(final Properties props) {
+        this.props = props;
+        Preconditions.checkArgument(props.containsKey(SHARDING_COUNT), "%s can not be null.", SHARDING_COUNT);
+        shardingCount = Ints.tryParse(props.getProperty(SHARDING_COUNT));
+        Preconditions.checkArgument(null != shardingCount, "%s is not valid.", SHARDING_COUNT);
+    }
+
+    @Override
+    public String doSharding(final Collection<String> availableTargetNames, final PreciseShardingValue<Long> shardingValue) {
+        for (String each : availableTargetNames) {
+            if (each.endsWith(String.valueOf(shardingValue.getValue() % shardingCount))) {
+                return each;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public Collection<String> doSharding(final Collection<String> availableTargetNames, final RangeShardingValue<Long> shardingValue) {
+        return availableTargetNames;
+    }
+}

examples/shardingsphere-jdbc-example/single-feature-example/extension-example/custom-sharding-algortihm-example/class-based-sharding-algorithm-example/class-based-sharding-spring-boot-jpa-example/src/main/resources/application-sharding-databases-tables.properties

@@ -0,0 +1,70 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+spring.shardingsphere.mode.type=Standalone
+spring.shardingsphere.mode.repository.type=File
+spring.shardingsphere.mode.overwrite=true
+
+spring.shardingsphere.datasource.names=ds-0,ds-1
+
+spring.shardingsphere.datasource.ds-0.jdbc-url=jdbc:mysql://127.0.0.1:3306/demo_ds_0?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=UTF-8
+spring.shardingsphere.datasource.ds-0.type=com.zaxxer.hikari.HikariDataSource
+spring.shardingsphere.datasource.ds-0.driver-class-name=com.mysql.jdbc.Driver
+spring.shardingsphere.datasource.ds-0.username=root
+spring.shardingsphere.datasource.ds-0.password=
+
+spring.shardingsphere.datasource.ds-1.jdbc-url=jdbc:mysql://127.0.0.1:3306/demo_ds_1?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=UTF-8
+spring.shardingsphere.datasource.ds-1.type=com.zaxxer.hikari.HikariDataSource
+spring.shardingsphere.datasource.ds-1.driver-class-name=com.mysql.jdbc.Driver
+spring.shardingsphere.datasource.ds-1.username=root
+spring.shardingsphere.datasource.ds-1.password=
+
+spring.shardingsphere.rules.sharding.default-database-strategy.standard.sharding-column=user_id
+spring.shardingsphere.rules.sharding.default-database-strategy.standard.sharding-algorithm-name=datasource-class-based
+spring.shardingsphere.rules.sharding.binding-tables[0]=t_order,t_order_item
+spring.shardingsphere.rules.sharding.broadcast-tables=t_address
+
+spring.shardingsphere.rules.sharding.tables.t_order.actual-data-nodes=ds-$->{0..1}.t_order_$->{0..1}
+spring.shardingsphere.rules.sharding.tables.t_order.table-strategy.standard.sharding-column=order_id
+spring.shardingsphere.rules.sharding.tables.t_order.table-strategy.standard.sharding-algorithm-name=t-order-class-based
+
+spring.shardingsphere.rules.sharding.tables.t_order.key-generate-strategy.column=order_id
+spring.shardingsphere.rules.sharding.tables.t_order.key-generate-strategy.key-generator-name=snowflake
+
+spring.shardingsphere.rules.sharding.tables.t_order_item.actual-data-nodes=ds-$->{0..1}.t_order_item_$->{0..1}
+spring.shardingsphere.rules.sharding.tables.t_order_item.table-strategy.standard.sharding-column=order_id
+spring.shardingsphere.rules.sharding.tables.t_order_item.table-strategy.standard.sharding-algorithm-name=t-order-item-class-based
+
+spring.shardingsphere.rules.sharding.tables.t_order_item.key-generate-strategy.column=order_item_id
+spring.shardingsphere.rules.sharding.tables.t_order_item.key-generate-strategy.key-generator-name=snowflake
+
+spring.shardingsphere.rules.sharding.sharding-algorithms.datasource-class-based.type=CLASS_BASED
+spring.shardingsphere.rules.sharding.sharding-algorithms.datasource-class-based.props.strategy=standard
+spring.shardingsphere.rules.sharding.sharding-algorithms.datasource-class-based.props.algorithmClassName=org.apache.shardingsphere.example.extension.classbased.sharding.spring.boot.jpa.fixture.ClassBasedDataSourceStandardShardingAlgorithmFixture
+spring.shardingsphere.rules.sharding.sharding-algorithms.datasource-class-based.props.sharding-count=2
+spring.shardingsphere.rules.sharding.sharding-algorithms.t-order-class-based.type=CLASS_BASED
+spring.shardingsphere.rules.sharding.sharding-algorithms.t-order-class-based.props.strategy=standard
+spring.shardingsphere.rules.sharding.sharding-algorithms.t-order-class-based.props.algorithmClassName=org.apache.shardingsphere.example.extension.classbased.sharding.spring.boot.jpa.fixture.ClassBasedOrderStandardShardingAlgorithmFixture
+spring.shardingsphere.rules.sharding.sharding-algorithms.t-order-class-based.props.sharding-count=2
+spring.shardingsphere.rules.sharding.sharding-algorithms.t-order-item-class-based.type=CLASS_BASED
+spring.shardingsphere.rules.sharding.sharding-algorithms.t-order-item-class-based.props.strategy=standard
+spring.shardingsphere.rules.sharding.sharding-algorithms.t-order-item-class-based.props.algorithmClassName=org.apache.shardingsphere.example.extension.classbased.sharding.spring.boot.jpa.fixture.ClassBasedOrderItemStandardShardingAlgorithmFixture
+spring.shardingsphere.rules.sharding.sharding-algorithms.t-order-item-class-based.props.sharding-count=2
+
+spring.shardingsphere.rules.sharding.key-generators.snowflake.type=SNOWFLAKE
+
+spring.shardingsphere.props.sql-show=true