Ulrike Brenner Die APEX APIs Schatzkiste copy · PDF filePL/SQL Oracle Forms/Reports ......
Transcript of Ulrike Brenner Die APEX APIs Schatzkiste copy · PDF filePL/SQL Oracle Forms/Reports ......
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Die APEX APIs Schatzkiste
November 2015 DOAG 2015
Ulrike Brenner
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Ulrike Brenner
• Seit 1999 Oracle Entwicklerin
• Oracle DB 8-12c
• SQL PL/SQL Oracle Forms/ReportsAPEX
• Entwicklerin Teamleiterin Kundenbetreuerin
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API
Application Programming Interface
Schnittstelle zur Anwendungsprogrammierung
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APEX-APIs
Oracle Application Express API Reference is intended for application developers who are building database-centric web applications using Oracle Application Express.
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APEX-APIs
Oracle Application Express API Reference is intended for application developers who are building database-centric web applications using Oracle Application Express.
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APEX-APIs
• PL/SQL - Packages
- direkt in APEX in einem PL/SQL-Block
- in einem Package in der DB gekapselt
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APEX-APIs
• in APEX in Verwendung
• getestet
• supported
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APEX-APIs
• APEX 5 (jede neue APEX-Version)
• New Features
• Deprecated and Desupported Features
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APEX-APIs
• APEX 5- 28 APEX_ Packages ca. 500 Prozeduren/Funktionen- JavaScript APIs
• Application Express API Reference: https://docs.oracle.com/cd/E59726_01/doc.50/e39149/toc.htm
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Collections in der DB
• Associative Arrays (index-by tables)
• Nested Tables
• Varrays
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APEX_COLLECTION
• temporäre Speicherung (innerhalb einer Session) von
- Zeilen
- Spalten
• insert / update / delete
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APEX_COLLECTION
• Abbildung eines Workflowsz.B.: Upload einer csv-Datei -) Laden der Datei -) Verbindung Spalten csv-&Tabellen -) Analyse der Daten (insert/update/delete)
• Performancez.B.: mehrfach verwendete zeitaufwändige Selects
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APEX_COLLECTION
• Name d. Collection: max 255 Zeichen (wird immer in Großbuchstaben umgewandelt)
• SEQ_ID = eindeutige ID einer row pro Collection
• C001 -> C050: Character - Spalten
• N1->N5 / D1->D5: Number / Date
• CLOB001, BLOB001, XMLTYPE001
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APEX_COLLECTION
• CREATE_COLLECTION
• CREATE_OR_TRUNCATE_COLLECTION
• CREATE_COLLECTION_FROM_QUERY
• CREATE_COLLECTION_FROM_QUERY2
• CREATE_COLLECTION_FROM_QUERY_B
• CREATE_COLLECTION_FROM_QUERYB2
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APEX_COLLECTION
APEX_COLLECTION. CREATE_COLLECTION_FROM_QUERY
( p_collection_name => 'MY_COLLECTION' , p_query => 'SELECT DEPTNO , DNAME FROM DEPT' );
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APEX_COLLECTION
View: APEX_COLLECTIONS (Plural!)
SELECT SEQ_ID , C001 AS DEPTNO , C002 AS DNAME FROM APEX_COLLECTIONS WHERE COLLECTION_NAME = ‘MY_COLLECTION' ;
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APEX_COLLECTION
• Add / Update Member
• Resequence Collection / Sort Members
• Truncate Collection
• Delete 1 / all Collections
• …
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APEX_COLLECTION
• Packaged Applications
- Sample Collections
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APEX_IRInteractive Report
• Query, die der Enduser ausführt inklusive aller Filter
- Interactive Report als Filter
- Performanceanalyse
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APEX_IR
• Query, die der Enduser ausführt
• Zurücksetzen von Report Settings
• Löschen von Saved Reports
• Ändern von Subscriptions Email/Language
• Delete Report (saved IR)
• Change Report Owner (saved IR)
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APEX_IR
Empfohlen nur im Submit-Prozess (Report Download Issue)
• Filter hinzufügen
• Clear Report
• Reset Report
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APEX_IRvIRReport APEX_IR.t_report;
vIRReport := APEX_IR.Get_Report ( p_page_id IN NUMBER , p_region_id IN NUMBER );
tatsächliche Query: vIRReport.sql_query
angewandte Filter: vIRReport.binds(i).name vIRReport.binds(i).value
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APEX_IRInteractive Report
• Packaged Applications
- Sample Reporting
- page 11
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APEX_ZIP
• neu mit APEX 5
• zip/unzip von Dateien
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APEX_ZIP
• ADD_FILE
- hängt einzelne BLOBs in eine ZIP-Datei
• FINISH
- nach der letzten einzufügenden Datei aufzurufen um die ZIP-Datei fertig zu erstellen
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APEX_ZIP
• GET_FILES
- Liefert in einem Array die Dateinamen einer ZIP-Datei (BLOBs)
- inklusive Pfad
• GET_FILE_CONTENT
- Retourniert die einzelne Datei aus der ZIP-Datei
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APEX_DEBUG
Erweiterung des Debug-Message-Logsin PL/SQL Code
• Vereinfachung der Fehlersuche
• seit APEX 4.2: APEX_DEBUG_MESSAGE ->APEX_DEBUG
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APEX_DEBUG
• Error (Level 1) wird immer geschrieben
• Message (Def. Level 4) nur wenn Debug enabled ist
- Substitution Strings (%s)
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APEX_DEBUGAPEX_DEBUG.ERROR ( p_message IN VARCHAR2 , p0 IN VARCHAR2 DEFAULT NULL , p1 IN VARCHAR2 DEFAULT NULL ....... , p9 IN VARCHAR2 DEFAULT NULL , p_max_length IN PLS_INTEGER DEFAULT 1000 );
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APEX_DEBUG
• Selection der generierten Texte/Messages/Fehler
• via GUI im Entwicklermodus
• View: APEX_DEBUG_MESSAGES
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APEX_DEBUG
• Enable (Level 1-9) / Disable
• Remove debug by age / by app
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APEX_ITEM
• APEX-Felder dynamisch erstellen
- Checkbox, Radiogroup
- Date-Popup
- Select-List
- Textfelder, Textareas
- Hidden Items
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APEX_JSON
• JavaScript Object Notation
• Textbasiertes Datenformat zum Datenaustausch und Speichern von Daten
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APEX_JSON
• neu mit APEX 5
• kann aber auch direkt in der DB verwendet werden
• auch ohne APEX nutzbar
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natives JSON
• natives JSON ab DB-Version 12.1.0.2
• JSON_VALUE, JSON_QUERY, JSON_TABLE
• kein natives Erzeugen von JSONhttp://sql-plsql-de.blogspot.co.at/2015/05/apexjson-ohne-apex-json-erzeugen-mit.html
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APEX_JSON
• Parsen
• Auslesen
• Generieren
• XML <-> JSON
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Installation einer APEX-Applikation
• Import der Applikation über GUI
• Ausführen eines SQL-Skripts über ein command-line Entwicklertools (z.B: SQL-Plus)
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Installation einer APEX-Applikation
• selber Workspace
• selbe Workspace-ID
• @f1234.sql
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APEX_APPLICATION_INSTALL
• Änderung von Attributen einer Applikation bei der Installation, z.B.:
- Workspace ID
- Application ID
- Offset
- parsing Schema …
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APEX_APPLICATION_INSTALL
• Import einer Applikation in einen anderen Workspace mit einem anderen parsing Schema
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APEX_APPLICATION_INSTALL
• Applikation: 1234
• neuer Workspace: MY_WS_PROD
• neues parsing Schema: MY_PROD_SCHEMA
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APEX_APPLICATION_INSTALL
SELECT WORKSPACE_ID INTO vWorkspaceID FROM APEX_WORKSPACES WHERE WORKSPACE = ‘MY_WS_PROD’ ;
APEX_APPLICATION_INSTALL. SET_WORKSPACE_ID(vWorkspaceID);
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APEX_APPLICATION_INSTALL
APEX_APPLICATION_INSTALL. GENERATE_OFFSET;
APEX_APPLICATION_INSTALL. SET_SCHEMA(‘MY_PROD_SCHEMA');
@f1234.sql
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APEX_APPLICATION_INSTALL
Automatische Installation von Supporting Objects:
APEX_APPLICATION_INSTALL. SET_AUTO_INSTALL_SUP_OBJ
( p_auto_install_sup_obj => true );
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APEX-APIs
• Stöbern Sie in der Dokumentation!
• https://docs.oracle.com/cd/E59726_01/doc.50/e39149/toc.htm
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Ulrike Brennerclick-click IT Solutions
Aspettenstraße 48 A-2380 Perchtoldsdorf
[email protected]://www.click-click.at