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unit Test4; |
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|
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{$mode objfpc}{$H+} |
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{$codepage utf8} |
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|
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{Test 4: Update, Insert and Delete Queries} |
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|
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{ This test opens the employee example databases with the supplied user name/password |
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and runs several queries: |
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|
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1. Update an employee record and report affected rows. |
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|
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2. Show Changed Record |
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|
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3. Insert new employee record and report affected rows Repeat with a duplicated |
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parameter name. |
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|
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4. Show inserted record and then delete it and report affected rows |
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|
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5. Repeat insert with a null PHONE_EXT. |
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|
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6. Show inserted record and total records |
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|
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7. Prepare query again and report results |
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|
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8. Prepare query with a different transaction and report results. |
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|
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9. Open Cursor with a different transaction and report results. |
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|
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10. Implicit Rollback and disconnect. |
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|
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} |
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|
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interface |
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|
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uses |
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Classes, SysUtils, TestManager, IB; |
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|
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type |
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|
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{ TTest4 } |
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|
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TTest4 = class(TTestBase) |
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private |
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procedure DoQuery(Attachment: IAttachment); |
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public |
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function TestTitle: string; override; |
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procedure RunTest(CharSet: string; SQLDialect: integer); override; |
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end; |
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|
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|
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implementation |
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|
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{ TTest4 } |
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|
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procedure TTest4.DoQuery(Attachment: IAttachment); |
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var Transaction, Transaction2, Transaction3: ITransaction; |
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Statement: IStatement; |
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Rows: IResultSet; |
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stats: TPerfCounters; |
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begin |
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Transaction := Attachment.StartTransaction([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],taRollback); |
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Statement := Attachment.Prepare(Transaction,'Update Employee Set Hire_Date = ? Where EMP_NO = ?',3); |
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Statement.GetSQLParams[0].AsDAteTime := EncodeDate(2016,1,31);; |
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Statement.GetSQLParams[1].AsInteger := 8; |
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Statement.Execute; |
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WriteAffectedRows(Statement); |
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Transaction.Rollback; |
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Transaction.Start(TARollback); |
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|
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3); |
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Statement.EnableStatistics(true); |
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 8; |
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ReportResults(Statement); |
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if Statement.GetPerfStatistics(stats) then |
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WritePerfStats(stats); |
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|
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'INSERT INTO EMPLOYEE (EMP_NO, FIRST_NAME, LAST_NAME, PHONE_EXT, HIRE_DATE,' + |
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'DEPT_NO, JOB_CODE, JOB_GRADE, JOB_COUNTRY, SALARY) '+ |
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'VALUES (:EMP_NO, :FIRST_NAME, :LAST_NAME, :PHONE_EXT, :HIRE_DATE,' + |
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':DEPT_NO, :JOB_CODE, :JOB_GRADE, :JOB_COUNTRY, :SALARY)',3); |
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with Statement.GetSQLParams do |
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begin |
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ByName('EMP_NO').AsInteger := 150; |
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ByName('FIRST_NAME').AsString := 'John'; |
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ByName('LAST_NAME').AsString := 'Doe'; |
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ByName('PHONE_EXT').AsString := ''; |
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ByName('HIRE_DATE').AsDateTime := EncodeDate(2015,4,1); |
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ByName('DEPT_NO').AsString := '600'; |
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ByName('JOB_CODE').AsString := 'Eng'; |
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ByName('JOB_GRADE').AsInteger := 4; |
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ByName('JOB_COUNTRY').AsString := 'England'; |
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ByName('SALARY').AsFloat := 41000.89; |
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end; |
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Statement.Execute; |
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WriteAffectedRows(Statement); |
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|
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3); |
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writeln(OutFile,'Relation Name = ',Statement.Metadata.GetUniqueRelationName); |
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PrintMetaData(Statement.GetMetaData); |
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 150; |
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ReportResults(Statement); |
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|
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{Now repeat but with a non-unique parameter name} |
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'INSERT INTO EMPLOYEE (EMP_NO, FIRST_NAME, LAST_NAME, PHONE_EXT, HIRE_DATE,' + |
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'DEPT_NO, JOB_CODE, JOB_GRADE, JOB_COUNTRY, SALARY) '+ |
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'VALUES (:EMP_NO, :FIRST_NAME, :FIRST_NAME, :PHONE_EXT, :HIRE_DATE,' + |
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':DEPT_NO, :JOB_CODE, :JOB_GRADE, :JOB_COUNTRY, :SALARY)',3); |
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with Statement.GetSQLParams do |
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begin |
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ByName('EMP_NO').AsInteger := 151; |
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ByName('FIRST_NAME').AsString := 'Major'; |
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ByName('PHONE_EXT').AsString := ''; |
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ByName('HIRE_DATE').AsDateTime := EncodeDate(2015,4,1);; |
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ByName('DEPT_NO').AsString := '600'; |
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ByName('JOB_CODE').AsString := 'Eng'; |
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ByName('JOB_GRADE').AsInteger := 4; |
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ByName('JOB_COUNTRY').AsString := 'England'; |
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ByName('SALARY').AsFloat := 40000.59; |
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end; |
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Statement.Execute; |
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WriteAffectedRows(Statement); |
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|
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3); |
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 151; |
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ReportResults(Statement); |
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|
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writeln(OutFile,'Now Delete the rows'); |
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Statement := Attachment.Prepare(Transaction,'Delete From Employee Where EMP_NO = ?',3); |
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Statement.GetSQLParams[0].AsInteger := 150; |
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Statement.Execute; |
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WriteAffectedRows(Statement); |
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Statement.GetSQLParams[0].AsInteger := 151; |
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Statement.Execute; |
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WriteAffectedRows(Statement); |
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|
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{Now again but with a null} |
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'INSERT INTO EMPLOYEE (EMP_NO, FIRST_NAME, LAST_NAME, PHONE_EXT, HIRE_DATE,' + |
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'DEPT_NO, JOB_CODE, JOB_GRADE, JOB_COUNTRY, SALARY) '+ |
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'VALUES (:EMP_NO, :FIRST_NAME, :LAST_NAME, :PHONE_EXT, :HIRE_DATE,' + |
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':DEPT_NO, :JOB_CODE, :JOB_GRADE, :JOB_COUNTRY, :SALARY)',3); |
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with Statement.GetSQLParams do |
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begin |
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ByName('EMP_NO').AsInteger := 150; |
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ByName('FIRST_NAME').AsString := 'Jane'; |
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ByName('LAST_NAME').AsString := 'Doe'; |
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ByName('PHONE_EXT').Clear; |
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ByName('HIRE_DATE').AsDateTime := EncodeDate(2015,4,1);; |
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ByName('DEPT_NO').AsString := '600'; |
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ByName('JOB_CODE').AsString := 'Eng'; |
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ByName('JOB_GRADE').AsInteger := 4; |
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ByName('JOB_COUNTRY').AsString := 'England'; |
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ByName('SALARY').AsFloat := 41000.89; |
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end; |
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writeln(OutFile,'Inserting'); |
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Statement.Execute; |
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WriteAffectedRows(Statement); |
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|
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3); |
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 150; |
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ReportResults(Statement); |
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|
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writeln(OutFile,'Employee Count = ', Attachment.OpenCursorAtStart(Transaction, |
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'Select count(*) from EMPLOYEE',3)[0].AsInteger); |
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|
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writeln(OutFile,'Prepare Query again'); |
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writeln(OutFile); |
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Statement.Prepare; |
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 150; |
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ReportResults(Statement); |
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|
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Transaction2 := Attachment.StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taRollback); |
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writeln(OutFile,'Prepare Query again with a different transaction'); |
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writeln(OutFile); |
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Statement.Prepare(Transaction2); |
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 8; |
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ReportResults(Statement); |
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|
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Transaction3 := Attachment.StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taRollback); |
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writeln(OutFile,'Open Cursor with a different transaction'); |
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writeln(OutFile); |
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Rows := Statement.OpenCursor(Transaction3); |
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try |
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while Rows.FetchNext do |
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ReportResult(Rows); |
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finally |
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Rows.Close; |
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end; |
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writeln(OutFile,'Same Statement - updated params'); |
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 9; |
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ReportResults(Statement); |
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end; |
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|
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function TTest4.TestTitle: string; |
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begin |
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Result := 'Test 4: Update, Insert and Delete Queries'; |
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end; |
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|
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procedure TTest4.RunTest(CharSet: string; SQLDialect: integer); |
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var Attachment: IAttachment; |
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DPB: IDPB; |
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begin |
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DPB := FirebirdAPI.AllocateDPB; |
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DPB.Add(isc_dpb_user_name).setAsString(Owner.GetUserName); |
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DPB.Add(isc_dpb_password).setAsString(Owner.GetPassword); |
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DPB.Add(isc_dpb_lc_ctype).setAsString(CharSet); |
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DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(SQLDialect); |
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|
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writeln(OutFile,'Opening ',Owner.GetEmployeeDatabaseName); |
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Attachment := FirebirdAPI.OpenDatabase(Owner.GetEmployeeDatabaseName,DPB); |
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writeln(OutFile,'Database Open'); |
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DoQuery(Attachment); |
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end; |
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|
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initialization |
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RegisterTest(TTest4); |
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|
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end. |
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|
