How to get XMLType in Java?

How to get XMLType in Java?

You can select the XMLType data in JDBC in one of two ways:

1. Use the getClobVal() or getStringVal() in SQL and get the result as a oracle.sql.CLOB or java.lang.String in Java.
2. Use the getOPAQUE() call in the PreparedStatement to get the whole XMLType instance, and use the XMLType constructor to construct an oracle.

What is@ XMLType in Java?

Overview of Java DOM API for XMLType This is a generic API for client and server, for both XML schema-based and non-schema-based documents. It is implemented using the Java package oracle. xdb. DOM views the parsed document as a tree of objects. To access XMLType data using JDBC, use the class oracle.

How to fetch data from Database in XML format using Java?

XML data retrieval in JDBC applications

1. Use the ResultSet. getSQLXML method to retrieve the data. Then use a SQLXML.
2. Use a ResultSet. getXXX method other than ResultSet.
3. Use the ResultSet. getObject method to retrieve the data, and then cast it to the DB2Xml type and assign it to a DB2Xml object.

How do you use getClobVal?

If you call getClobVal() programmatically, you must explicitly free such a temporary CLOB value when finished with it. You can do this by calling PL/SQL method DBMS_LOB. freeTemporary() or its equivalent in Java or C (OCI). You can use method DBMS_LOB.

What is @xmltype?

A data type within an XML document is a type that has been assigned to an element on the instance using the dt:dt attribute, or through an XML Schema, a formal definition of an XML document. In addition, data types can be declared as elements. The XML parser uses the data type information to validate the document.

Is XML used in Java?

XML provides a universal syntax for Java semantics (behavior). Simply put, this means that a developer can create descriptions for different types of data to make the data behave in various ways with Java programming code, and can later repeatedly use and modify those descriptions.

How do you export data from database to XML file in Java?

How to export data to XML Spreadsheet file in Java

1. Step 1: Download and install EasyXLS Excel Library for Java.
2. Step 2: Create a Java project.
3. Step 3: Include EasyXLS library into project.
4. Step 4: Run Java code that exports data to XML Spreadsheet file.

What is Oracle Xmltype?

XMLType is a system-defined opaque type for handling XML data. XMLType has predefined member functions on it to extract XML nodes and fragments. You can create columns of XMLType and insert XML documents into it.

What is the use of @XmlType?

The annotation element propOrder() in the @XmlType annotation allows you to specify the content order in the generated schema type. When you use the @XmlType. propOrder annotation on a class to specify content order, all public properties and public fields in the class must be specified in the parameter list.

What is the difference between HTML and XML?

The key difference between HTML and XML is that HTML displays data and describes the structure of a webpage, whereas XML stores and transfers data. XML is a standard language which can define other computer languages, but HTML is a predefined language with its own implications.

Which is Java DOM API for xmltype-Oracle?

Oracle XML DB supports the Java Document Object Model (DOM) Application Program Interface (API) for XMLType. This is a generic API for client and server, for both XML schema-based and non-schema-based documents. It is implemented using Java package oracle.xml.parser.v2.

How to retrieve XML data from Oracle XML DB?

When you use the Java DOM API to retrieve XML data from Oracle XML DB: If the connection is thin, you get an XMLDocument instance. If the connection is thick or kprb, you get an XDBDocument instance with method getDOM() and an XMLDocument instance with method getDocument().

How to fix oracle xmltype.getclobval ( )?

Bug:14781609 XDB: XMLType.getclobval () returns a temporary LOB when XML is stored in a CLOB. fix in patchset 11.2.0.4 Easy enough to verify if it’s the .getClobVal () call or not – perform an INSTR test in PL/SQL (not Java) on your resultant CLOB to see if the CHR (0) exists or not.

How to update and delete xmltype in Java?

You can update, insert, or delete XMLType data in either of these ways: Bind a CLOB instance or a string to an INSERT, UPDATE, or DELETE statement, and use the XMLType constructor inside SQL to construct the XML instance. Example 15-5 illustrates this. Use setObject () in the PreparedStatement to set the entire XMLType instance.