SQLite with Spring Boot
Added custom dialect for SQLite database. Simplify spring-data-rest Configuration Now uses profiles so that learners don't need to uncomment code in order for demonstrations to work. Issue: BAEL-2213
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@ -33,6 +33,15 @@
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-autoconfigure</artifactId>
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</dependency>
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<dependency>
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<groupId>org.xerial</groupId>
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<artifactId>sqlite-jdbc</artifactId>
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<version>${sqlite.version}</version>
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</dependency>
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<!-- <dependency> <groupId>org.hsqldb</groupId> <artifactId>hsqldb</artifactId> <version>${hsqldb.version}</version> </dependency> <dependency> <groupId>org.apache.derby</groupId>
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<artifactId>derby</artifactId> <version>${derby.version}</version> </dependency> <dependency> <groupId>org.xerial</groupId> <artifactId>sqlite-jdbc</artifactId> <version>${sqlite.version}</version>
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</dependency> -->
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@ -43,6 +52,8 @@
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</build>
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<properties>
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<start-class>com.baeldung.SpringDataRestApplication</start-class>
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<sqlite.version>3.25.2</sqlite.version>
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<spring-boot.version>2.1.0.RELEASE</spring-boot.version>
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</properties>
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@ -7,6 +7,7 @@ import javax.sql.DataSource;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.context.annotation.Profile;
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import org.springframework.context.annotation.PropertySource;
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import org.springframework.core.env.Environment;
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import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
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@ -14,11 +15,12 @@ import org.springframework.jdbc.datasource.DriverManagerDataSource;
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import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
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import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
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//@Configuration
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@Configuration
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@EnableJpaRepositories(basePackages = "com.baeldung.repositories")
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// @PropertySource("persistence-h2.properties")
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// @PropertySource("persistence-hsqldb.properties")
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// @PropertySource("persistence-derby.properties")
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//@PropertySource("persistence-sqlite.properties")
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public class DbConfig {
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@Autowired
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@ -59,3 +61,25 @@ public class DbConfig {
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}
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}
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@Configuration
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@Profile("h2")
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@PropertySource("persistence-h2.properties")
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class H2Config {}
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@Configuration
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@Profile("hsqldb")
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@PropertySource("persistence-hsqldb.properties")
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class HsqldbConfig {}
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@Configuration
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@Profile("derby")
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@PropertySource("persistence-derby.properties")
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class DerbyConfig {}
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@Configuration
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@Profile("sqlite")
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@PropertySource("persistence-sqlite.properties")
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class SqliteConfig {}
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@ -0,0 +1,78 @@
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package com.baeldung.dialect;
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import org.hibernate.dialect.Dialect;
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import org.hibernate.dialect.identity.IdentityColumnSupport;
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import java.sql.Types;
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public class SQLiteDialect extends Dialect {
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public SQLiteDialect() {
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registerColumnType(Types.BIT, "integer");
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registerColumnType(Types.TINYINT, "tinyint");
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registerColumnType(Types.SMALLINT, "smallint");
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registerColumnType(Types.INTEGER, "integer");
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registerColumnType(Types.BIGINT, "bigint");
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registerColumnType(Types.FLOAT, "float");
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registerColumnType(Types.REAL, "real");
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registerColumnType(Types.DOUBLE, "double");
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registerColumnType(Types.NUMERIC, "numeric");
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registerColumnType(Types.DECIMAL, "decimal");
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registerColumnType(Types.CHAR, "char");
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registerColumnType(Types.VARCHAR, "varchar");
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registerColumnType(Types.LONGVARCHAR, "longvarchar");
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registerColumnType(Types.DATE, "date");
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registerColumnType(Types.TIME, "time");
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registerColumnType(Types.TIMESTAMP, "timestamp");
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registerColumnType(Types.BINARY, "blob");
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registerColumnType(Types.VARBINARY, "blob");
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registerColumnType(Types.LONGVARBINARY, "blob");
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registerColumnType(Types.BLOB, "blob");
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registerColumnType(Types.CLOB, "clob");
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registerColumnType(Types.BOOLEAN, "integer");
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}
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public IdentityColumnSupport getIdentityColumnSupport() {
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return new SQLiteIdentityColumnSupport();
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}
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public boolean hasAlterTable() {
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return false;
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}
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public boolean dropConstraints() {
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return false;
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}
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public String getDropForeignKeyString() {
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return "";
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}
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public String getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable, String[] primaryKey, boolean referencesPrimaryKey) {
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return "";
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}
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public String getAddPrimaryKeyConstraintString(String constraintName) {
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return "";
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}
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public String getForUpdateString() {
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return "";
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}
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public String getAddColumnString() {
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return "add column";
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}
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public boolean supportsOuterJoinForUpdate() {
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return false;
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}
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public boolean supportsIfExistsBeforeTableName() {
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return true;
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}
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public boolean supportsCascadeDelete() {
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return false;
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}
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}
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@ -0,0 +1,22 @@
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package com.baeldung.dialect;
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import org.hibernate.MappingException;
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import org.hibernate.dialect.identity.IdentityColumnSupportImpl;
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public class SQLiteIdentityColumnSupport extends IdentityColumnSupportImpl {
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@Override
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public boolean supportsIdentityColumns() {
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return true;
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}
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@Override
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public String getIdentitySelectString(String table, String column, int type) throws MappingException {
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return "select last_insert_rowid()";
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}
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@Override
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public String getIdentityColumnString(int type) throws MappingException {
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return "integer";
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}
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}
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@ -0,0 +1 @@
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spring.profiles.default=h2
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@ -1,4 +1,7 @@
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driverClassName=org.sqlite.JDBC
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url=jdbc:sqlite:memory:myDb
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url=jdbc:sqlite:memory:myDb?cache=shared
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username=sa
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password=sa
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password=sa
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hibernate.dialect=com.baeldung.dialect.SQLiteDialect
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hibernate.hbm2ddl.auto=create-drop
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hibernate.show_sql=true
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