Added sample code and accompanying scripts for JDBC Data Types

java/jdbc-data-types/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<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>
+
+ <groupId>org.example</groupId>
+ <artifactId>datatypes</artifactId>
+ <version>1.0-SNAPSHOT</version>
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <configuration>
+ <source>18</source>
+ <target>18</target>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+
+ <properties>
+ <maven.compiler.source>19</maven.compiler.source>
+ <maven.compiler.target>19</maven.compiler.target>
+ </properties>
+ <dependencies>
+ <dependency>
+ <groupId>com.oracle.database.jdbc</groupId>
+ <artifactId>ojdbc8-production</artifactId>
+ <version>21.1.0.0</version>
+ <type>pom</type>
+ </dependency>
+ </dependencies>
+
+</project>

java/jdbc-data-types/scripts/init.sql

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+
+-- Table used for Generation of XML and JSON from Releation table
+create table orders(
+ orderId number generated by default on null as identity primary key,
+ productId number,
+ order_count number,
+ order_date date,
+ order_invoice_id number
+);
+
+insert into orders(productId, order_count, order_date, order_invoice_id)
+values (3, 1, to_date('11/29/2022', 'MM/DD/YYYY'), 219);
+insert into orders(productId, order_count, order_date, order_invoice_id)
+values (2, 2, to_date('11/29/2022', 'MM/DD/YYYY'), 219);
+insert into orders(productId, order_count, order_date, order_invoice_id)
+values (4, 2, sysdate, 218);
+insert into orders(productId, order_count, order_date, order_invoice_id)
+values (2, 5, sysdate, 218);
+insert into orders(productId, order_count, order_date, order_invoice_id)
+values (3, 1, sysdate, 218);
+
+-- JSON column example
+CREATE TABLE PRODUCTS(
+ productId NUMBER generated by default on null as identity primary key,
+ productInformation json
+);
+
+insert into products(productInformation)
+values ('{
+ "Title": "Gone the Days of Summer",
+ "ProductType": "Book",
+ "Author": "Eliza Smith",
+ "Stock": 5
+}');
+
+insert into products(productInformation)
+values ('{
+ "Title": "At the End of the Universe and Spring",
+ "ProductType": "Book",
+ "Author": "Frank Thorn",
+ "Stock": 2
+}');
+
+insert into products(productInformation)
+values ('{
+ "Title": "As Calm as Winter Nights",
+ "ProductType": "Book",
+ "Stock": 0
+}');
+
+-- XMLTYPE as a table example
+CREATE TABLE VENDOR_INVOICES of XMLTYPE;
+
+insert into VENDOR_INVOICES values(XMLTYPE('<?xml version="1.0"?>
+<Invoice><InvoiceId>273</InvoiceId></Invoice>'));
+
+-- XMLTYPE as a column example
+CREATE TABLE INVOICES(
+ invoiceId NUMBER generated by default on null as identity primary key,
+ invoice xmltype
+);
+
+insert into invoices(invoice) values (XMLTYPE('<?xml version="1.0"?>
+<Invoice>
+ <InvoiceId>272</InvoiceId>
+ <ShippingInformation>
+ <ContactInformation>
+ <FirstName>Jane</FirstName>
+ <LastName>Smith</LastName>
+ <Phone>7408812361</Phone>
+ </ContactInformation>
+ <ShippingAddress>
+ <Address>33079 23 Mile Rd</Address>
+ <City>Chesterfield</City>
+ <State>Michigan</State>
+ <Zip>48047</Zip>
+ <Country>United States</Country>
+ </ShippingAddress>
+ </ShippingInformation>
+ <Orders>
+ <Order>
+ <ProductId>3</ProductId>
+ <Count>5</Count>
+ </Order>
+ </Orders>
+</Invoice>
+'));
+
+
+-- sys_refcursor example with a function
+create or replace function get_information return sys_refcursor is
+ v_refc sys_refcursor;
+begin
+ open v_refc for
+ select p.productInformation from products p;
+ return v_refc;
+end;
+/
+
+-- REF Cursor Package
+CREATE OR REPLACE PACKAGE products_data AUTHID DEFINER AS
+ TYPE prdcursorA IS REF CURSOR RETURN products%ROWTYPE;
+ TYPE prdcursorB IS REF CURSOR;
+ PROCEDURE open_prod_cv_a(products_curvar IN OUT prdcursorA);
+ PROCEDURE open_prod_cv_b(products_curvar IN OUT prdcursorB, source VARCHAR2);
+END products_data;
+/
+CREATE or REPLACE PACKAGE BODY products_data AS
+ --- strong cusror
+ PROCEDURE open_prod_cv_a(products_curvar IN OUT prdcursorA) IS
+ BEGIN
+ OPEN products_curvar FOR SELECT * from products;
+ END open_prod_cv_a;
+ --- weak cursor (different return types)
+ PROCEDURE open_prod_cv_b(products_curvar IN OUT prdcursorB, source VARCHAR2) IS
+ BEGIN
+ CASE source
+ WHEN 'Products' then OPEN products_curvar FOR SELECT * FROM PRODUCTS;
+ WHEN 'Invoices' then OPEN products_curvar FOR SELECT * FROM INVOICES;
+ WHEN 'Orders' then OPEN products_curvar FOR SELECT * FROM ORDERS;
+ END CASE;
+
+ END open_prod_cv_b;
+END products_data;
+/
+
+-- Associative Array procedure
+create or replace procedure get_order_status(status_id in number, return_status out varchar2) is
+ TYPE status IS TABLE OF VARCHAR2(250)
+ INDEX BY VARCHAR2(64);
+ orderStatus status;
+begin
+ orderStatus(1) := 'Received';
+ orderStatus(2) := 'Processing';
+ orderStatus(3) := 'Shipped';
+ orderStatus(4) := 'Completed';
+ orderStatus(5) := 'Cancelled';
+
+ return_status := orderStatus(status_id);
+end;
+/