Java, SQLJ og XML i Sybase databaser. nrik H Larsen nrik.larsen@sybase.com

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1 Java, SQLJ og XML i Sybase databaser nrik H Larsen nrik.larsen@sybase.com

2 Hvad vil jeg gennemgå Vis med eksempler hvad Java kan bruges til i Sybase ASE og ASA

3 ASE Client Java C/C++ PowerBuilder. Server SQL Transact SQL Forretningslogik Delvis klient Devis server

4 ASE Applikations servere Forretningslogik flyttet delvis både fra Klient og Server til applikation server. Flere applikationsservere forstår flere programmering sprog. ODBC Ct-Lib ASE DirectC DB2 ODBC Oracle Mssql file system

5 ASE Java i databasen Ikke så afhængig af SQL dialekter Genbruge java classer Flyt forretningslogik Betydelig bedre performance. ASE Sun JVM JVM JDBC DB1 mydb ASE Kernel

6 Java Howto Simpelt eksempel 1> java.lang.string 2> = Dette er en test 3> 4> go (1 row affected) DETTE ER EN TEST java option enable i ASE Første bruger starter JVM Hver bruger har sin egen JVM Hver user connection tager ca 50 til 80 extra. Query kan tage betydeligt mere (1 row affected)

7 Java classes i tabeller 1> Create table mytable 2> ( 3> id int not null, 4> name java.lang.string 5> ) 6> Go 1> Insert into mytable values (1,'Abc') 2> go (1 row affected) 1> select * from mytable 2> go id name Abc

8 Kald af standard metoder 1> select id,name>>touppercase() from mytable 2> go id ABC (1 row affected) 1>

9 Egne classer public class myclass1 implements java.io.serializable { public java.lang.string fname; } public java.lang.string lname; public java.lang.string catname() { return lname+", "+fname; }

10 Skal oversættes og installeres set JAVA_HOME=C:\jdk1.2.2 javac -O myclass1.java jar -cvf0 myclass1.jar myclass1.class instjava -f myclass1.jar -new -Usa -P"" -Dpubs2 -SRAPTORW2K

11 Brug af myclass1 1> myclass1 2> = new myclass1() 3> "Jespersen" 4> 5> go (1 row affected) Jespersen, Jesper (1 row affected) 1> Forklar hvorfor der opstår performance problemer med classer som datatyper i tabeller.

12 JDBC fra classer private static Connection connecter() throws Exception, SQLException, ClassNotFoundException { String forname = "sybase.asejdbc.asedriver"; String url = "jdbc:default:connection"; } Class.forName(forName); con = DriverManager.getConnection(url); return con;

13 Brug af myclass1 public static String as_list (String sql) throws Exception { if (con == null) con = connecter(); Statement stmt = con.createstatement();; ResultSet rs = stmt.executequery(sql);; } reset_list(); while (rs.next()) { list2 (rs.getstring(1)); } return item_list.tostring();

14 Java funktioner SQLJ create function dbo.as_list(a varchar(1024)) returns varchar(1024) language java parameter style java external name 'svs_utils.as_list'

15 Brug af min Java funktion select name, as_list( 'select sc.name from syscolumns sc where sc.id = ' + convert(varchar(20), so.id) ) as columns from sysobjects so where type = 'U'

16 Resultat af Funktion Name columns publishers pub_id, pub_name, city, state roysched title_id, lorange, hirange, royalty sales stor_id, ord_num, date salesdetail stor_id, ord_num, title_id, qty, discount

17 SQLJ Stored procedures SQLJ stored procedures gennemgåes ikke her. Præcentere Java classer som SQL stored procedures Kan kaldes fra alle klienter C/C++, ODBC Forretningslogik kan lægges i databasen. Kun JDBC connection string skal ændres. Hvorfor skulle forretningslogikken flyttes fra applikationen og eller applikationsserver?

18 JDBC til andet en ASE og andre features Brug instjava til at installere 3. Parts JDBC i databasen. Java.net er supportet kan bruge URL classen kan bruge mailto classen Socket class brug inputstream og outputstream SocketServer class Lav fileserver/webserver indefra Sybase

19 JDBC til andet en ASE Brug instjava til at installere 3. Parts JDBC i databasen, og brug

20 JDBC til andet en ASE Brug instjava til at installere 3. Parts JDBC i databasen, og brug

21 ASE Unicode Enhancements DESCRIPTION No longer need UTF-8 as the default charset for using unichar & univarchar Unichar data type (UTF-16) are now available regardless of server s character set Support for Unicode string literals through implementation of U& syntax ANSI SQL 2002 standard New syntax is available for specifying Unicode in character literals Extended (non-binary) the sort orders available for UTF-8 characters BENEFITS Easier for ISV to port their application to Sybase Encourage customer to migrate applications to Unicode

22 Unichar data type availability Unichar (UTF-16) data type Permits Unicode data even in server with legacy character set (e.g. ISO-1) Permits migration of existing applications to Unicode via incremental schema change. ex: alter table t1 modify col1 univarchar(100) No syntax changes required to application code

23 Character literal promotion Character literals in queries are promoted to unichar data type when they cannot be represented in the server s charset iso_1 SJIS client server select * from t1 where col1 =

24 ASE Information Integration Integrated XML support Web Services Support

25 ASE Feature Details INTEGRATED XML MANAGEMENT

26 ASE Native XML Management Description Native XML storage, indexing and Query support SQL/XML duality With support for XPATH/XQUERY and SQLX Rich SQL XML and XML SQL transformation Details Eliminates the need to have JAVA in ASE (compared to ) Use sp_configure enable xml turn this functionality ON/OFF Licensed Option Available for FREE in Developer Edition

27 ASE Native XML Management - Benefits NATIVE XML STORAGE & INDEXING Store and Retrieve well formed XML data Schema independent storage FastXML Indexes for high query performance Self defined indexes No user input necessary SQL/XML DUALITY XPATH/XQUERY and SQLX support Complete SQL/XML interoperability at language and storage level Granular results Returns documents, document fragments, elements Wild card support for complex queries XML TRANSFORMATION & MAPPING Allows XML transformations on stored XML document and the XML View Maps SQL data as XML, and XML as SQL data

28 ASE XML Engine Architecture ASE Native XML Engine XML Query XML Query Engine Table Applications Path Processor XML Data XML Parser XML Store Engine I/O Streaming File CIS

29 XML Storage and Indexing SHRED TRADES TID DETAIL CUSTOMER CID DETAIL Store and Retrieve XML natively Schema independent and can be dynamic XML Document STORE AS TEXT SELECT FOR XML XML Document Shred XML and store as Relational data Fast XML Indexes (like as B-Tree for relation data) PARSE XML PARSE PARSER XML indexes Self defined indexes No user input necessary Provides high performance Support XQUERY,XPATH and SQLX ASE Wildcards and functions for complex querying

30 SQL and XML Duality SELECT FOR XML TRADES TID DETAIL CUSTOMER CID DETAIL SQL RESULT RESULTS RID DETAIL Interoperability between XML and SQL at the language and storage level Support XPATH/XQUERY and SQLX SQL + XPATH QUERY XPATH QUERY XML XML Document XML XML Document XML XML Document XML indexes XML RESULT select. from FOR XML to generate results in XML select. Xmlparse (doc) to parse xml document seamlessly Functions to map SQL results to XML and to map XML docs to SQL ASE

31 ASE Feature Details ASE Web Services

32 Web Services Support in ASE Description ASE as a Web Service Provider Expose logic inside ASE as a Web Service ASE as a Web Service Requestor Use ASE to access a Web Service and use the result with other data Configuration Lightweight, Standalone binary Need ASE_WEBSERVICES license To enable this, use sp_configure enable webservices, 1

33 Web Services Support in ASE Details Access T-SQL (stored procedures, functions) as web methods Generate dynamic WSDL Model Web Service as a proxy table Persistent database connections via sessions Support SSL RPC/encoded web services support document/literal web services support

34 ASE Web Services Provider PalmPilot ASE Web Services Producer imac imac SOAP HTTP Handler Soap Handler XML Mapping JDBC Windows ASE Unix

35 Example Execute select through Web Services <ws xmlns:xsi=" <row> <C1>Adaptive Server Enterprise/12.5.1/XXXXX/P/Sun_svr4/OS 5.8/main/1778/32- bit/fbo/wed Jun 25 05:15: </C1> </row> </ws>

36 ASE Web Services Consumer ASE Web Services Consumer CIS/TDS SDS Server XML Mapping Soap Stack ASE SOAP Server JDBC 1. Notify ASE of existence of ASE Web Services. sp_addserver webservices, sds, webservices Executed once per installation, typically at install time. 2. Import WSDL definition. webservice...gen_sproc_from_wsdl "WSDL File URL", "ASE host name", ASE port number Executed once for each web service to invoke. 3. Execute Web Service selectrreturnfrom GETPRICE where _ISBN = ' Executed as needed.

37 ASE Web Services Requestor/Consumer 1. select statement 2. RPC event 3. SOAP request 6. results ASE 5. results ASE Web Services Consumer 4. SOAP response SOAP Server

38 XML & Web Services Integration Web Service xml ASE - Web Services Full Text Search xml Web Service App logic xml objects ODBC Ct-Lib sql-xml ASE ASE - Web Services Direct Connect ORACLE, MSFT, IBM-DB2 ODBC, Mainfram e Applications file system

39 Q & A