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aberinnjaberinnj
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Added JDBC Centralized config code sample (#368)
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‎java/jdbc-centralized-config/.gitignore‎

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target/
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!.mvn/wrapper/maven-wrapper.jar
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!**/src/main/**/target/
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!**/src/test/**/target/
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### IntelliJ IDEA ###
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.idea/modules.xml
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.idea/jarRepositories.xml
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.idea/compiler.xml
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.idea/libraries/
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*.iws
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*.iml
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*.ipr
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### Eclipse ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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build/
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!**/src/main/**/build/
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!**/src/test/**/build/
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### VS Code ###
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.vscode/
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### Mac OS ###
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.DS_Store

‎java/jdbc-centralized-config/example/connect.json‎

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{
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"example": {
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"connect_descriptor": "<connect_descriptor>",
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"user": "admin",
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"password": {
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"type": "ocivault",
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"value": "ocid1.vaultsecret.oc1.phx.<ocivaultocid>"
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},
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"jdbc": {
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"oracle.jdbc.ReadTimeout": 1000,
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"defaultRowPrefetch": 20,
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"autoCommit": "false"
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}
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},
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"test": {
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"connect_descriptor": "<connect_descriptor>",
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"user": "testuser",
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"password": {
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"type": "ocivault",
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"value": "ocid1.vaultsecret.oc1.phx.<ocivaultocid>"
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},
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"jdbc": {
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"oracle.jdbc.ReadTimeout": 1000,
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"defaultRowPrefetch": 20,
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"autoCommit": "false"
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}
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}
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}

‎java/jdbc-centralized-config/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.oracle</groupId>
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<artifactId>jdbc-centralized-config</artifactId>
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<version>1.0-SNAPSHOT</version>
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<properties>
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<maven.compiler.source>17</maven.compiler.source>
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<maven.compiler.target>17</maven.compiler.target>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<slf4j.version>2.0.13.</slf4j.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.oracle.database.jdbc</groupId>
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<artifactId>ojdbc11</artifactId>
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<version>23.4.0.24.05</version>
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</dependency>
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<dependency>
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<groupId>com.oracle.database.jdbc</groupId>
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<artifactId>ucp11</artifactId>
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<version>23.4.0.24.05</version>
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</dependency>
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<dependency>
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<groupId>com.oracle.database.security</groupId>
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<artifactId>oraclepki</artifactId>
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<version>23.4.0.24.05</version>
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</dependency>
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<!-- For centralized config with OCI -->
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<dependency>
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<groupId>com.oracle.database.jdbc</groupId>
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<artifactId>ojdbc-provider-oci</artifactId>
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<version>1.0.1</version>
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</dependency>
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<!-- For centralized config with Azure -->
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<dependency>
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<groupId>com.oracle.database.jdbc</groupId>
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<artifactId>ojdbc-provider-azure</artifactId>
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<version>1.0.1</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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<version>1.7.36</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-simple</artifactId>
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<version>1.7.36</version>
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</dependency>
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</dependencies>
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</project>

‎java/jdbc-centralized-config/src/main/java/Main.java‎

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import database.DatabaseConfig;
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import database.DatabasePoolConfig;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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public class Main {
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static DatabaseConfig dbConfig;
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static class Provider {
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static final String OCI_OBJECT_STORE_CONFIG = "jdbc:oracle:thin:@config-ociobject://<url-path>";
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static final String BUILT_IN_FILE_CONFIG = "jdbc:oracle:thin:@config-file://<path-to-json-file>";
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static final String AZURE_APP_CONFIG = "jdbc:oracle:thin:@config-azure://<appconfig-name>";
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static final String OCI_VAULT_CONFIG = "jdbc:oracle:thin:@config-ocivault://<vault-secret-ocid>";
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static final String NORMAL_CONFIG = "jdbc:oracle:thin:@<connect-string>";
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}
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public static void main(String[] args) {
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System.setProperty("ORACLE_URL", Provider.BUILT_IN_FILE_CONFIG);
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dbConfig = DatabaseConfig.get();
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runConnectionTest();
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}
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// Test method
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private static void runConnectionTest() {
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boolean success = false;
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try (Connection c = dbConfig.getConnection();
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PreparedStatement stmt = c.prepareStatement("select 'true' from dual");
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ResultSet rs = stmt.executeQuery()){
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// Boolean Datatype is a 23ai feature
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if (rs.next()) success = rs.getBoolean(1);
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} catch (SQLException e) {
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e.printStackTrace();
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}
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System.out.println("Success: " + success);
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}
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}

‎java/jdbc-centralized-config/src/main/java/database/DatabaseConfig.java‎

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package database;
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import oracle.jdbc.pool.OracleDataSource;
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import oracle.ucp.jdbc.PoolDataSource;
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import oracle.ucp.jdbc.PoolDataSourceFactory;
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import java.sql.Connection;
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import java.sql.SQLException;
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public class DatabaseConfig {
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final OracleDataSource ods;
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private static DatabaseConfig config;
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DatabaseConfig() {
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try {
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ods = new OracleDataSource();
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} catch (SQLException e) {
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throw new RuntimeException(e);
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}
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}
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public static synchronized DatabaseConfig get() {
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if (config == null ) {
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String URL = System.getProperty("ORACLE_URL");
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config = new DatabaseConfig()
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.configure(URL);
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}
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return config;
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}
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private DatabaseConfig configure(String URL) {
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ods.setURL(URL);
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return this;
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}
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public Connection getConnection() throws SQLException {
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return ods.getConnection();
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}
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}

‎java/jdbc-centralized-config/src/main/java/database/DatabasePoolConfig.java‎

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package database;
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import oracle.ucp.jdbc.PoolDataSource;
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import oracle.ucp.jdbc.PoolDataSourceFactory;
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import java.sql.Connection;
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import java.sql.SQLException;
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public class DatabasePoolConfig {
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final String factoryClassName = "oracle.jdbc.pool.OracleDataSource";
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final String poolDataSourceName = "JDBC_UCP_POOL";
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final PoolDataSource pool;
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private static DatabasePoolConfig config;
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DatabasePoolConfig() {
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pool = PoolDataSourceFactory.getPoolDataSource();
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}
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public static synchronized DatabasePoolConfig get() {
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if (config == null ) {
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String URL = System.getProperty("ORACLE_URL");
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config = new DatabasePoolConfig()
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.configure(URL);
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}
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return config;
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}
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private DatabasePoolConfig configure(String URL) {
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System.out.println("Configuring with " + URL);
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try {
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pool.setURL(URL);
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pool.setConnectionPoolName(poolDataSourceName);
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pool.setConnectionFactoryClassName(factoryClassName);
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pool.setInitialPoolSize(100);
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} catch (SQLException e) {
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System.out.println("Error setting up oracle.jdbc.pool.OracleDataSource");
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throw new RuntimeException(e);
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}
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return this;
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}
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public Connection getConnection() throws SQLException {
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return pool.getConnection();
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}
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}

‎java/jdbc-centralized-config/src/main/resources/simplelogger.properties‎

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org.slf4j.simpleLogger.defaultLogLevel=error

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