Issue 1:
Bug Report

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Searched open and closed GitHub issues.

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Which version of ShardingSphere did you use?

shardingsphere-jdbc-core 5.2.0

Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?

ShardingSphere-JDBC

Expected behavior

I perform DB operations by Hibernate batch insert. i wish the sql insert executed unexceptly.

Actual behavior

I perform DB operations by Hibernate batch insert.

while execute batch insert, the sql statement is like insert into xx (f1,f2,f3) values (?,?,?), the output exception is like the following:

at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)

Reason analyze (If you can)

I guess the root reason is the ShardingInsertValuesToken class did not implemented toString() method.

I reload the class and implement toString() method, the problem resolved.

@Override
public String toString() {
return getInsertValues().stream().map(Objects::toString).collect(Collectors.joining(","));
}

I debug thePrepareStatementImpl instance within mysql-connector lib, the actual sql is

`insert invo xx (f1,f2,f3) values org.apache.shardingsphere.sharding.rewrite.token.pojo.ShardingInsertValuesToken@XXX'

The problem occours at sql rewrite process, and i found that when no db sharding is configured, the by depperly debugging.

the invocation path something like below:

SQLRouteEngine -> PartialSQLRouteExecutor#route

Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc.

MultiDataBaseShardingSphereDataSource.java

package app.support;

import org.apache.shardingsphere.driver.jdbc.adapter.AbstractDataSourceAdapter;
import org.apache.shardingsphere.driver.jdbc.context.JDBCContext;
import org.apache.shardingsphere.driver.state.DriverStateContext;
import org.apache.shardingsphere.infra.config.database.DatabaseConfiguration;
import org.apache.shardingsphere.infra.config.database.impl.DataSourceProvidedDatabaseConfiguration;
import org.apache.shardingsphere.infra.config.mode.ModeConfiguration;
import org.apache.shardingsphere.infra.config.rule.RuleConfiguration;
import org.apache.shardingsphere.infra.config.rule.scope.GlobalRuleConfiguration;
import org.apache.shardingsphere.infra.instance.metadata.InstanceMetaData;
import org.apache.shardingsphere.infra.instance.metadata.InstanceMetaDataBuilderFactory;
import org.apache.shardingsphere.mode.manager.ContextManager;
import org.apache.shardingsphere.mode.manager.ContextManagerBuilderFactory;
import org.apache.shardingsphere.mode.manager.ContextManagerBuilderParameter;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.*;
import java.util.function.Function;
import java.util.stream.Collectors;

/**
* ShardingSphere data source. support multi database
*/
public class MultiDatabaseShardingSphereDataSource extends AbstractDataSourceAdapter implements AutoCloseable {

private final String databaseName;

private final ContextManager contextManager;

private final JDBCContext jdbcContext;

public MultiDatabaseShardingSphereDataSource(final String databaseName, final ModeConfiguration modeConfig, final Map<String, DataSource> dataSourceMap,
final Collection<RuleConfiguration> ruleConfigs, final Properties props) throws SQLException {
String[] databaseNames = databaseName.split(",");
this.databaseName = databaseNames[0];
contextManager = createContextManager(databaseNames, modeConfig, dataSourceMap, ruleConfigs, null == props ? new Properties() : props);
jdbcContext = new JDBCContext(contextManager.getDataSourceMap(databaseNames[0]));
}

private ContextManager createContextManager(final String[] databaseNames, final ModeConfiguration modeConfig, final Map<String, DataSource> dataSourceMap,
final Collection<RuleConfiguration> ruleConfigs, final Properties props) throws SQLException {
InstanceMetaData instanceMetaData = InstanceMetaDataBuilderFactory.create("JDBC", -1);
Collection<RuleConfiguration> globalRuleConfigs = ruleConfigs.stream().filter(each -> each instanceof GlobalRuleConfiguration).collect(Collectors.toList());
Collection<RuleConfiguration> databaseRuleConfigs = new LinkedList<>(ruleConfigs);
databaseRuleConfigs.removeAll(globalRuleConfigs);
Map<String, DatabaseConfiguration> databaseConfigs = Arrays.stream(databaseNames)
.collect(Collectors.toMap(Function.identity(),
e -> new DataSourceProvidedDatabaseConfiguration(dataSourceMap, databaseRuleConfigs)));
ContextManagerBuilderParameter parameter = new ContextManagerBuilderParameter(modeConfig, databaseConfigs,
globalRuleConfigs, props, Collections.emptyList(), instanceMetaData);
return ContextManagerBuilderFactory.getInstance(modeConfig).build(parameter);
}

@Override
public Connection getConnection() throws SQLException {
return DriverStateContext.getConnection(databaseName, contextManager, jdbcContext);
}

@Override
public Connection getConnection(final String username, final String password) throws SQLException {
return getConnection();
}

/**
* Close data sources.
*
* @param dataSourceNames data source names to be closed
* @throws Exception exception
*/
public void close(final Collection<String> dataSourceNames) throws Exception {
Map<String, DataSource> dataSourceMap = contextManager.getDataSourceMap(databaseName);
for (String each : dataSourceNames) {
close(dataSourceMap.get(each));
}
contextManager.close();
}

private void close(final DataSource dataSource) throws Exception {
if (dataSource instanceof AutoCloseable) {
((AutoCloseable) dataSource).close();
}
}

@Override
public void close() throws Exception {
close(contextManager.getDataSourceMap(databaseName).keySet());
}

@Override
public int getLoginTimeout() throws SQLException {
Map<String, DataSource> dataSourceMap = contextManager.getDataSourceMap(databaseName);
return dataSourceMap.isEmpty() ? 0 : dataSourceMap.values().iterator().next().getLoginTimeout();
}

@Override
public void setLoginTimeout(final int seconds) throws SQLException {
for (DataSource each : contextManager.getDataSourceMap(databaseName).values()) {
each.setLoginTimeout(seconds);
}
}
}

DataSource:

@Bean
DataSource dataSource(Environment environment) {
BindResult<Map<String, DataSourceProperties>> bindResult = Binder.get(environment)
.bind("abacus.datasource", Bindable.mapOf(String.class, DataSourceProperties.class));
if (!bindResult.isBound()) {
throw new IllegalArgumentException("abacus.datasource must be specified");
}

Map<String, DataSource> dataSourceMap = bindResult.get().entrySet().stream()
.collect(Collectors.toMap(Map.Entry::getKey, e -> e.getValue().initializeDataSourceBuilder().build()));

ModeConfiguration modeConfig = new ModeConfiguration("Standalone", null, false);

// table rule:
ParameterizedType type = TypeUtils.parameterize(Map.class, String.class, TypeUtils.parameterize(List.class, String.class));
ResolvableType tableRuleConfigType = ResolvableType.forType(type);
BindResult<Map<String, List<String>>> tableRulesResult = Binder.get(environment).bind("abacus.table-rules",
Bindable.of(tableRuleConfigType));

List<ShardingTableRuleConfiguration> tableRules = tableRulesResult.get().entrySet().stream()
.flatMap(entry -> {
String db = entry.getKey();
return entry.getValue().stream().map(table -> new ShardingTableRuleConfiguration(table,
db + "." + table.replaceFirst("^([^.]+[.])*", "")));
})
.collect(Collectors.toList());

BindResult<List<String>> bindingTables = Binder.get(environment).bind("abacus.binding-tables", Bindable.listOf(String.class));

try {
ShardingRuleConfiguration rule = new ShardingRuleConfiguration();
rule.setTables(tableRules);
rule.setBindingTableGroups(bindingTables.get());
Properties props = new Properties();
props.put("sql-show", true);
// return ShardingSphereDataSourceFactory.createDataSource("abacus", modeConfig, dataSourceMap,
// Collections.singletonList(rule), props);
return new MultiDatabaseShardingSphereDataSource("abacus,acornhc_account", modeConfig, dataSourceMap,
Collections.singletonList(rule), props);
} catch (SQLException e) {
throw new RuntimeException(e);
}
}

application.yml:

abacus:
datasource:
default:
url: jdbc:mysql://ip1:port/abacus
username: xx
password: aa
my-cat-account:
url: jdbc:mysql://ip2:port/
username: xx
password: xx
table-rules:
default:
- abacus.tag
- abacus.tag_binding
- abacus.tag_category
my-cat-account:
- member

binding-tables:
- abacus.tag,abacus.tag_binding
- abacus.tag_category,abacus.tag

Example codes for reproduce this issue (such as a github link).

Issue 2:
For details, please refer to #13994

The ANTLR definition syntax is as follows:

SHOW SHARDING KEY GENERATORS (FROM schemaName)?

Examples are as follows:

> SHOW SHARDING KEY GENERATORS;
+-------------------------+--------+-------------------+
| name | type | props |
+-------------------------+----------------------------+
| uuid_key_generator | uuid | "worker-id"=123 |
+-------------------------+--------+-------------------+