JDBC Developer's Guide - Supra - Cincom

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Creating custom Java classes for Cincom ORDB objectsCustom mapping is a powerful tool that allows Java classes to map to databaseclasses. The Cincom ORDB JDBC Driver provides custom mapping functions thatcan automatically generate instances of a custom Java class from a databaseobject reference.This section discusses:♦♦♦♦♦♦♦Generating Java classes from a database schemaGenerating Java classes with the CustomMappingDlg classAnnotated examples of custom mapped classesRelating Java classes to database class namesControlling when custom mapping occursInserting, deleting, and updating with custom mappingWriting your own custom mapping classesJDBC Developer's Guide, P25-9504-03 Page 38Chapter: 4. Cincom ORDB ExtensionsSection: Creating custom Java classes for Cincom ORDB objects
Generating Java classes from a database schemaThe ddltojava utility generates custom Java classes from a database schema.The utility processes the schema (.sch) file produced by the unloaddb utility,and generates Java classes for use in your applications.Even if you still have your schema file, Cincom recommends that you run theunloaddb utility to generate a new schema file. This ensures that all systemclasses are included in the schema used by the ddltojava utility.The name of the Java classes will be the database class name with a “j” prefix.For example, a database class named location will generate the Java classjlocation.java.The syntax of the ddltojava utility command is:ddltojava [ -d output_directory] [-p package_name][-preclass_prefix] [-v] schemafilewhere:-d output_directory Optional. This parameter is the name of an existingdirectory that will contain the resulting java files. Thedefault output location is the current workingdirectory.-p package_name This parameter influences the generated files. If youspecify a package name of sample.demodb, then thejava classes will be written tooutput_path\sample\demodb directory. Thesample\demodb directory will be created if it does notexist.-pre class_prefixOptional. This parameter is the prefix of thegenerated Java classes. For example, if you specify –pre java then, the names of the Java classes will be thenames in the schema preceded by the word java.-v Optional. This parameter is for the verbose mode. Itenables more messages.schemafileRequired. This parameter is the name of the schemadefinition file produced by the unloaddb utility.Generating Java classes with the CustomMappingDlg classThe CustomMappingDlg class contained in the %ORDB%\ordbjava.jar file is aJava swing application that you can use to generate java class files that map toyour Cincom ORDB classes. The tool can be invoked by the following command:java –cp %ORDB%\ordbjava.jar CustomMappingDlgJDBC Developer's Guide, P25-9504-03 Page 39Chapter: 4. Cincom ORDB ExtensionsSection: Creating custom Java classes for Cincom ORDB objects
Page 1: SQL ACCESS FOR SUPRASERVER PDM ®JD
Page 4 and 5: Contents1. Overview ...............
Page 6 and 7: 6. Coding tips and troubleshooting
Page 8 and 9: What is JDBC?JDBC (Java Database Co
Page 10: Cincom ORDB extensions to the JDBC
Page 13 and 14: Checking installed directories and
Page 15 and 16: Testing JDBC and the database conne
Page 17 and 18: System.out.println ("Please enter i
Page 19 and 20: 3. Basic FeaturesIntroductionThis c
Page 21 and 22: Step 2: Open a connection to a data
Page 23: Step 5: Process the ResultSet objec
Page 26 and 27: Cincom ORDB JDBC extension typesAlt
Page 28 and 29: 4. Cincom ORDB ExtensionsIntroducti
Page 30 and 31: Class ordbGloThe ordbjava.jdbc.ordb
Page 32 and 33: prepare a statement that has an inp
Page 34 and 35: get the first resort referenceordbj
Page 36 and 37: Invoking database methodsYou can us
Page 40 and 41: Annotated examples of custom mapped
Page 42 and 43: The above constructor can be used b
Page 44 and 45: class jaccommodations.javaThe follo
Page 46 and 47: public void readSQL(SQLInput stream
Page 48 and 49: Relating Java classes to database c
Page 50 and 51: Controlling when custom mapping occ
Page 52 and 53: Using the getAttributes method of t
Page 54 and 55: 13 activities// 14 sounds_of_the_ca
Page 56 and 57: }Statement stmt = conn.createStatem
Page 58 and 59: In the previous example, the applic
Page 60 and 61: ♦writeSQL() method. You must impl
Page 62 and 63: Retrieving a collection and its ele
Page 64 and 65: while (rset.next()) {// activities
Page 66 and 67: ordbCollection rooms = null;while (
Page 68 and 69: public static void main (String arg
Page 70 and 71: insertValue(Object javaObj, int JDB
Page 72 and 73: Example using the Array as input pa
Page 74 and 75: create a new collection of seashore
Page 76 and 77: 5. Cincom ORDB JDBC NotesIntroducti
Page 78 and 79: ConnectionThe database does not sup
Page 80 and 81: PreparedStatementCincom ORDB JDBC D
Page 82 and 83: Cincom ORDB JDBC Driver does not su
Page 84 and 85: SQLOutputThe Cincom ORDB JDBC Drive
Page 86 and 87: JDBC and multi-threadingThe Cincom
Page 88 and 89:
Example: Disabling AutoCommit. The
Page 90 and 91:
setConnectPoolTimeout(long millisec
Page 92 and 93:
Logging JDBC callsThe Cincom ORDB J
Page 94 and 95:
Accessing JDBC samplesUse one of th
Page 96 and 97:
IndexAaccesing attribute values,exa
Page 98:
RResultSet objectclosing 23processi
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