Examples of org.eclipse.persistence.sequencing.Sequence

Package org.eclipse.persistence.sequencing

Examples of org.eclipse.persistence.sequencing.Sequence

org.eclipse.persistence.sequencing.Sequence

Purpose: Abstract class to define sequencing.
Description A sequence defines how generated ids are obtained. The main sequence types are TableSequence and NativeSequence. Descriptors using sequencing will use the sequence object defined in their session's DatabaseLogin with the name matching their sequence name. If a specific sequence is not defined for the name the DatabaseLogin's default sequence will be used. @see TableSequence @see NativeSequence

        login.setUsesExternalTransactionController(loginConfig.getExternalTransactionController());


        // Sequencing - XML Schema default is null
        if (loginConfig.getSequencingConfig() != null) {
            if (loginConfig.getSequencingConfig().getDefaultSequenceConfig() != null) {
                Sequence sequence = buildSequence(loginConfig.getSequencingConfig().getDefaultSequenceConfig());
                login.setDefaultSequence(sequence);
            }


            if ((loginConfig.getSequencingConfig().getSequenceConfigs() != null) && !loginConfig.getSequencingConfig().getSequenceConfigs().isEmpty()) {
                Enumeration eSequenceConfigs = loginConfig.getSequencingConfig().getSequenceConfigs().elements();


                while (eSequenceConfigs.hasMoreElements()) {
                    Sequence sequence = buildSequence((SequenceConfig)eSequenceConfigs.nextElement());
                    login.addSequence(sequence);
                }
            }
        }

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        login.setUsesExternalTransactionController(loginConfig.getExternalTransactionController());


        // Sequencing - XML Schema default is null
        if (loginConfig.getSequencingConfig() != null) {
            if (loginConfig.getSequencingConfig().getDefaultSequenceConfig() != null) {
                Sequence sequence = buildSequence(loginConfig.getSequencingConfig().getDefaultSequenceConfig());
                login.setDefaultSequence(sequence);
            }


            if ((loginConfig.getSequencingConfig().getSequenceConfigs() != null) && !loginConfig.getSequencingConfig().getSequenceConfigs().isEmpty()) {
                Enumeration eSequenceConfigs = loginConfig.getSequencingConfig().getSequenceConfigs().elements();


                while (eSequenceConfigs.hasMoreElements()) {
                    Sequence sequence = buildSequence((SequenceConfig)eSequenceConfigs.nextElement());
                    login.addSequence(sequence);
                }
            }
        }

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                    continue;
                }


                processedSequenceNames.add(seqName);


                Sequence sequence = getSession().getDatasourcePlatform().getSequence(seqName);


                SequenceDefinition sequenceDefinition = buildSequenceDefinition(sequence);


                if (sequenceDefinition == null) {
                    continue;

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            if (!descriptor.usesSequenceNumbers()) {
                continue;
            }
            if (descriptor.getSequenceNumberField().equals(field)) {
                String seqName = descriptor.getSequenceNumberName();
                Sequence sequence = getSequence(seqName);
                shouldAcquireSequenceValueAfterInsert = sequence.shouldAcquireValueAfterInsert();
                break;
            }
        }
        return shouldAcquireSequenceValueAfterInsert;
    }

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            }
        } else {
            if ((projectPlatform.getSequences() != null) && !projectPlatform.getSequences().isEmpty()) {
                Iterator itProjectSequences = projectPlatform.getSequences().values().iterator();
                while (itProjectSequences.hasNext()) {
                    Sequence sequence = (Sequence)itProjectSequences.next();
                    if (!sessionPlatform.getSequences().containsKey(sequence.getName())) {
                        sessionPlatform.addSequence(sequence);
                    }
                }
            }
        }

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        // wasn't specified) so assign it the annotation default of ""
        if (m_generator == null) {
            m_generator = "";
        }


        Sequence sequence = sequences.get(m_generator);
            
        if (sequence == null) {
            // A null strategy will default to AUTO.
            if (m_strategy == null || m_strategy.equals(GenerationType.AUTO.name())) {
                if (sequences.containsKey(MetadataProject.DEFAULT_AUTO_GENERATOR)) {
                    login.setDefaultSequence(sequences.get(MetadataProject.DEFAULT_AUTO_GENERATOR));
                }
            } else if (m_strategy.equals(GenerationType.TABLE.name())) {
                if (m_generator.equals("")) {
                    sequence = sequences.get(MetadataProject.DEFAULT_TABLE_GENERATOR);
                } else {
                    sequence = (Sequence) sequences.get(MetadataProject.DEFAULT_TABLE_GENERATOR).clone();
                    sequence.setName(m_generator);
                }
            } else if (m_strategy.equals(GenerationType.SEQUENCE.name())) {
                if (m_generator.equals("")) {
                    sequence = sequences.get(MetadataProject.DEFAULT_SEQUENCE_GENERATOR);
                } else {
                    sequence = (Sequence) sequences.get(MetadataProject.DEFAULT_SEQUENCE_GENERATOR).clone();
                    sequence.setName(m_generator);
                }
            } else if (m_strategy.equals(GenerationType.IDENTITY.name())) {
                if (m_generator.equals("")) {
                    sequence = sequences.get(MetadataProject.DEFAULT_IDENTITY_GENERATOR);
                } else {
                    sequence = (Sequence) sequences.get(MetadataProject.DEFAULT_IDENTITY_GENERATOR).clone();
                    sequence.setName(m_generator);
                }
            }
       }


       if (sequence != null) {
           descriptor.setSequenceNumberName(sequence.getName());
           login.addSequence(sequence);
       } else {
           String seqName;


           if (m_generator.equals("")) {

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                // Here the default table name should come from the platform 
                // in case the current one is not legal for this platform (e.g.
                // SEQUENCE for Symfoware). We should always try to avoid making
                // metadata changes after processing and ensure we always 
                // process with the correct and necessary metadata.
                Sequence seq = m_session.getDatasourcePlatform().getDefaultSequence();
                String defaultTableGeneratorName = (seq instanceof TableSequence) ? ((TableSequence) seq).getTableName() : DEFAULT_TABLE_GENERATOR;
                // Process the default values.
                processTable(tableGenerator, defaultTableGeneratorName, getPersistenceUnitDefaultCatalog(), getPersistenceUnitDefaultSchema());
                
                sequences.put(DEFAULT_TABLE_GENERATOR, tableGenerator.process(m_logger));

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            if (!descriptor.usesSequenceNumbers()) {
                continue;
            }
            if (descriptor.getSequenceNumberField().equals(field)) {
                String seqName = descriptor.getSequenceNumberName();
                Sequence sequence = getSequence(seqName);
                shouldAcquireSequenceValueAfterInsert = sequence.shouldAcquireValueAfterInsert();
                break;
            }
        }
        return shouldAcquireSequenceValueAfterInsert;
    }

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            }
        } else {
            if ((projectPlatform.getSequences() != null) && !projectPlatform.getSequences().isEmpty()) {
                Iterator itProjectSequences = projectPlatform.getSequences().values().iterator();
                while (itProjectSequences.hasNext()) {
                    Sequence sequence = (Sequence)itProjectSequences.next();
                    if (!sessionPlatform.getSequences().containsKey(sequence.getName())) {
                        sessionPlatform.addSequence(sequence);
                    }
                }
            }
        }

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                if (isPKField) {
                    fieldDef.setIsPrimaryKey(true);
                    // Check if the generation strategy is IDENTITY
                    String sequenceName = descriptor.getSequenceNumberName();
                    DatabaseLogin login = this.project.getLogin();
                    Sequence seq = login.getSequence(sequenceName);
                    if(seq instanceof DefaultSequence) {
                        seq = login.getDefaultSequence();
                    }
                    //The native sequence whose value should be acquired after insert is identity sequence
                    boolean isIdentity = seq instanceof NativeSequence && seq.shouldAcquireValueAfterInsert();
                    fieldDef.setIsIdentity(isIdentity);
                }
    
                //find the table the field belongs to, and add it to the table, only if not already added.
                tableDefintion = this.tableMap.get(dbField.getTableName());

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org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

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org.eclipse.persistence.internal.jpa.metadata.MetadataProject

org.eclipse.persistence.internal.jpa.metadata.sequencing.GeneratedValueMetadata

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