Examples of org.jpox.metadata.FieldMetaData

org.jpox.metadata.FieldMetaData

Representation of the Meta-Data for a field of a class.

Lifecycle state

An object of this type has 2 lifecycle states. The first is the raw constructed object which represents pure MetaData (maybe from a MetaData file). The second is a "populated" object which represents MetaData for a Field of a class with the metadata aligned to be appropriate for that Field.

Containers

Each field can represent a container. The container can be an array, a Collection or a Map. The field type must be of the correct type to represent these.

JPOX Management

Each field can be managed by JPOX or not. The class provides a method for identifying if a field is managed by JPOX (isJdoField()). If a field is managed by JPOX, it will have a field "id" (within its class). In a class the field "id" will start at 0 (for the first field, in alphabetical order).

MetaData Element

The MetaData element represented here is as follows

  <!ELEMENT field (extension*, (collection|map|array|(column*))?, join?, element?,  key?, value?, fetch-group*, order?, embedded?, index?, unique?, foreign-key?, delete-action?, extension*)?> <!ATTLIST field name CDATA #REQUIRED> <!ATTLIST field persistence-modifier (persistent|transactional|none) #IMPLIED> <!ATTLIST field table CDATA #IMPLIED> <!ATTLIST field null-value (exception|default|none) 'none'> <!ATTLIST field default-fetch-group (true|false) #IMPLIED> <!ATTLIST field embedded (true|false) #IMPLIED> <!ATTLIST field serialized (true|false) #IMPLIED> <!ATTLIST field dependent (true|false) #IMPLIED> <!ATTLIST field indexed (true|false|unique) #IMPLIED> <!ATTLIST field unique (true|false) #IMPLIED> <!ATTLIST field load-fetch-group CDATA #IMPLIED> <!ATTLIST field recursion-depth CDATA #IMPLIED> <!ATTLIST field primary-key (true|false) 'false'> <!ATTLIST field mapped-by CDATA #IMPLIED> <!ATTLIST field value-strategy CDATA #IMPLIED> <!ATTLIST field delete-action (restrict|cascade|null|default|none) #IMPLIED> <!ATTLIST field sequence CDATA #IMPLIED> <!ATTLIST field field-type CDATA #IMPLIED>

@since 1.1 @version $Revision: 1.83 $

                        {
                            fetchGroups[j] = new FetchGroupMetaData(cmd, groups[j].postLoad(), groups[j].name());
                            int numFields = groups[j].members().length;
                            for (int k=0;k<numFields;k++)
                            {
                                FieldMetaData fmd = mgr.getMetaDataFactory().newFieldObject(fetchGroups[j], 
                                    groups[j].members()[k].name(),
                                    null, null, null, null, null, null, null, null, null, null, null, 
                                    null, null, null, null, "" + groups[j].members()[k].recursionDepth(), null, null, null, null);
                                fetchGroups[j].addMember(fmd);
                            }
                        }
                    }
                    else if (annName.equals(JDOAnnotationUtils.FETCHGROUP))
                    {
                        if (fetchGroups != null)
                        {
                            JPOXLogger.METADATA.warn(LOCALISER.msg("MetaData.Annotations.FetchGroupSpecificationConflict",
                                cmd.getFullClassName()));
                        }
                        fetchGroups = new FetchGroupMetaData[1];
                        fetchGroups[0] = new FetchGroupMetaData(cmd, (String)annotationValues.get("postLoad"),
                            (String)annotationValues.get("name"));
                        Persistent[] fields = (Persistent[])annotationValues.get("members");
                        if (fields != null)
                        {
                            for (int j=0;j<fields.length;j++)
                            {
                                FieldMetaData fmd = mgr.getMetaDataFactory().newFieldObject(fetchGroups[0], fields[j].name(),
                                    null, null, null, null, null, null, null, null, null, null, null, 
                                    null, null, null, null, "" + fields[j].recursionDepth(), null, null, null, null);
                                fetchGroups[0].addMember(fmd);
                            }
                        }

View Full Code Here

        IndexMetaData idxmd = new IndexMetaData(name, table, unique);
        if (fields != null && fields.length > 0)
        {
            for (int j=0;j<fields.length;j++)
            {
                FieldMetaData fmd = new FieldMetaData(idxmd, fields[j]);
                idxmd.addMember(fmd);
            }
        }
        if (idxmd.getNumberOfMembers() == 0 && columns != null && columns.length > 0)
        {

View Full Code Here

        UniqueMetaData unimd = new UniqueMetaData(name, table, deferred);
        if (fields != null && fields.length > 0)
        {
            for (int j=0;j<fields.length;j++)
            {
                FieldMetaData fmd = new FieldMetaData(unimd, fields[j]);
                unimd.addMember(fmd);
            }
        }
        if (unimd.getNumberOfMembers() == 0 && columns != null && columns.length > 0)
        {

View Full Code Here

        ForeignKeyMetaData fkmd = new ForeignKeyMetaData(name, table, unique, deferred, deleteAction, updateAction);
        if (fields != null && fields.length > 0)
        {
            for (int j=0;j<fields.length;j++)
            {
                FieldMetaData fmd = new FieldMetaData(fkmd, fields[j]);
                fkmd.addMember(fmd);
            }
        }
        if (fkmd.getNumberOfMembers() == 0 && columns != null && columns.length > 0)
        {

View Full Code Here

            }
            // New field for this class
            else if (localName.equals("field"))
            {
                MetaData md = getStack();
                FieldMetaData fmd = newFieldObject(md,attrs);
                if (md instanceof ClassMetaData)
                {
                    ClassMetaData cmd = (ClassMetaData)md;
                    cmd.addMember(fmd);
                }
                else if (md instanceof FetchGroupMetaData)
                {
                    FetchGroupMetaData fgmd = (FetchGroupMetaData)md;
                    fgmd.addMember(fmd);
                }
                else if (md instanceof EmbeddedMetaData)
                {
                    EmbeddedMetaData emd = (EmbeddedMetaData)md;
                    emd.addMember(fmd);
                }
                else if (md instanceof ForeignKeyMetaData)
                {
                    ForeignKeyMetaData fkmd = (ForeignKeyMetaData)md;
                    fkmd.addMember(fmd);
                }
                else if (md instanceof IndexMetaData)
                {
                    IndexMetaData imd = (IndexMetaData)md;
                    imd.addMember(fmd);
                }
                else if (md instanceof UniqueMetaData)
                {
                    UniqueMetaData umd = (UniqueMetaData)md;
                    umd.addMember(fmd);
                }
                pushStack(fmd);
            }
            // New join
            else if (localName.equals("join"))
            {
                MetaData parent = getStack();
                JoinMetaData jnmd = new JoinMetaData(parent,
                                                   getAttr(attrs, "table"),
                                                   null, null,
                                                   getAttr(attrs, "column"),
                                                   getAttr(attrs, "outer"),
                                                   getAttr(attrs, "delete-action"),
                                                   getAttr(attrs, "indexed"),
                                                   getAttr(attrs, "unique"));
                if (parent instanceof AbstractMemberMetaData)
                {
                    AbstractMemberMetaData fmd = (AbstractMemberMetaData)parent;
                    fmd.setJoinMetaData(jnmd);
                }
                else if (parent instanceof AbstractClassMetaData)
                {
                    AbstractClassMetaData cmd = (AbstractClassMetaData)parent;
                    cmd.addJoin(jnmd);
                }
                else if (parent instanceof InheritanceMetaData)
                {
                    InheritanceMetaData imd = (InheritanceMetaData)parent;
                    imd.setJoinMetaData(jnmd);
                }
                pushStack(jnmd);
            }
            // New map container for this field
            else if (localName.equals("map"))
            {
                AbstractMemberMetaData fmd = (AbstractMemberMetaData)getStack();
                MapMetaData map = new MapMetaData(fmd,
                                getAttr(attrs,"key-type"),
                                getAttr(attrs,"embedded-key"),
                                getAttr(attrs,"dependent-key"),
                                getAttr(attrs,"serialized-key"),
                                getAttr(attrs,"value-type"),
                                getAttr(attrs,"embedded-value"),
                                getAttr(attrs,"dependent-value"),
                                getAttr(attrs,"serialized-value"));
                fmd.setContainer(map);
                pushStack(map);
            }
            // New array container for this field
            else if (localName.equals("array"))
            {
                AbstractMemberMetaData fmd = (AbstractMemberMetaData)getStack();
                ArrayMetaData amd = new ArrayMetaData(fmd,
                                getAttr(attrs, "element-type"),
                                getAttr(attrs, "embedded-element"),
                                getAttr(attrs, "dependent-element"),
                                getAttr(attrs, "serialized-element"));
                fmd.setContainer(amd);
                pushStack(amd);
            }
            // New collection container for this field
            else if (localName.equals("collection"))
            {
                AbstractMemberMetaData fmd = (AbstractMemberMetaData)getStack();
                CollectionMetaData colmd = new CollectionMetaData(fmd,
                                getAttr(attrs,"element-type"),
                                getAttr(attrs,"embedded-element"),
                                getAttr(attrs,"dependent-element"),
                                getAttr(attrs,"serialized-element"));
                fmd.setContainer(colmd);
                pushStack(colmd);
            }
            // New column
            else if (localName.equals("column"))
            {
                MetaData md = getStack();
                ColumnMetaData clnmd = new ColumnMetaData(md,
                                getAttr(attrs,"name"),
                                getAttr(attrs,"target"),
                                getAttr(attrs,"target-field"),
                                getAttr(attrs,"jdbc-type"),
                                getAttr(attrs,"sql-type"),
                                getAttr(attrs,"length"),
                                getAttr(attrs,"scale"),
                                getAttr(attrs,"allows-null"),
                                getAttr(attrs,"default-value"),
                                getAttr(attrs,"insert-value"),
                                null, null, null);
                if (md instanceof AbstractMemberMetaData)
                {
                    AbstractMemberMetaData fmd = (AbstractMemberMetaData)md;
                    fmd.addColumn(clnmd);
                }
                else if (md instanceof AbstractElementMetaData)
                {
                    AbstractElementMetaData elemd = (AbstractElementMetaData)md;
                    elemd.addColumn(clnmd);
                }
                else if (md instanceof JoinMetaData)
                {
                    JoinMetaData jnmd = (JoinMetaData)md;
                    jnmd.addColumn(clnmd);
                }
                else if (md instanceof IdentityMetaData)
                {
                    IdentityMetaData idmd = (IdentityMetaData)md;
                    idmd.addColumn(clnmd);
                }
                else if (md instanceof ForeignKeyMetaData)
                {
                    ForeignKeyMetaData fkmd = (ForeignKeyMetaData)md;
                    fkmd.addColumn(clnmd);
                }
                else if (md instanceof IndexMetaData)
                {
                    IndexMetaData idxmd = (IndexMetaData)md;
                    idxmd.addColumn(clnmd);
                }
                else if (md instanceof UniqueMetaData)
                {
                    UniqueMetaData unimd = (UniqueMetaData)md;
                    unimd.addColumn(clnmd);
                }
                else if (md instanceof OrderMetaData)
                {
                    OrderMetaData ormd = (OrderMetaData)md;
                    ormd.addColumn(clnmd);
                }
                else if (md instanceof DiscriminatorMetaData)
                {
                    DiscriminatorMetaData dismd = (DiscriminatorMetaData)md;
                    dismd.setColumnMetaData(clnmd);
                }
                else if (md instanceof VersionMetaData)
                {
                    VersionMetaData vermd = (VersionMetaData)md;
                    vermd.addColumn(clnmd);
                }
                else if (md instanceof AbstractClassMetaData)
                {
                    AbstractClassMetaData cmd = (AbstractClassMetaData)md;
                    cmd.addUnmappedColumn(clnmd);
                }
                else if (md instanceof PrimaryKeyMetaData)
                {
                    PrimaryKeyMetaData pkmd = (PrimaryKeyMetaData)md;
                    pkmd.addColumn(clnmd);
                }
                pushStack(clnmd);
            }
            // New element
            else if (localName.equals("element"))
            {
                AbstractMemberMetaData fmd = (AbstractMemberMetaData)getStack();
                ElementMetaData elemd = new ElementMetaData(fmd,
                                getAttr(attrs, "column"),
                                getAttr(attrs, "delete-action"),
                                getAttr(attrs, "update-action"),
                                getAttr(attrs, "indexed"),
                                getAttr(attrs, "unique"),
                                getAttr(attrs, "mapped-by"));
                fmd.setElementMetaData(elemd);
                pushStack(elemd);
            }
            // New key
            else if (localName.equals("key"))
            {
                AbstractMemberMetaData fmd = (AbstractMemberMetaData)getStack();
                KeyMetaData keymd = new KeyMetaData(fmd,
                                getAttr(attrs, "column"),
                                getAttr(attrs, "delete-action"),
                                getAttr(attrs, "update-action"),
                                getAttr(attrs, "indexed"),
                                getAttr(attrs, "unique"),
                                getAttr(attrs, "mapped-by"));
                fmd.setKeyMetaData(keymd);
                pushStack(keymd);
            }
            // New value
            else if (localName.equals("value"))
            {
                AbstractMemberMetaData fmd = (AbstractMemberMetaData)getStack();
                ValueMetaData valuemd = new ValueMetaData(fmd,
                                getAttr(attrs, "column"),
                                getAttr(attrs, "delete-action"),
                                getAttr(attrs, "update-action"),
                                getAttr(attrs, "indexed"),
                                getAttr(attrs, "unique"),
                                getAttr(attrs, "mapped-by"));
                fmd.setValueMetaData(valuemd);
                pushStack(valuemd);
            }
            // New fetch-group
            else if (localName.equals("fetch-group"))
            {
                MetaData md = getStack();
                FetchGroupMetaData fgmd = new FetchGroupMetaData(md, getAttr(attrs,"post-load"), getAttr(attrs,"name"));
                if (md instanceof FetchGroupMetaData)
                {
                    FetchGroupMetaData fgmdParent = (FetchGroupMetaData)md;
                    fgmdParent.addFetchGroup(fgmd);
                }
                else if (md instanceof AbstractClassMetaData)
                {
                    AbstractClassMetaData cmd = (AbstractClassMetaData)md;
                    cmd.addFetchGroup(fgmd);
                }
                else if (md instanceof FetchPlanMetaData)
                {
                    FetchPlanMetaData fpmd = (FetchPlanMetaData)md;
                    fpmd.addFetchGroup(fgmd);
                }
                pushStack(fgmd);
            }
            // New extension for this tag
            else if (localName.equals("extension"))
            {
                MetaData md = getStack();
                md.addExtension(getAttr(attrs,"vendor-name"), getAttr(attrs,"key"), getAttr(attrs,"value"));
            }
            // New version
            else if (localName.equals("version"))
            {
                AbstractClassMetaData cmd = (AbstractClassMetaData)getStack();
                VersionMetaData vermd = new VersionMetaData(
                                getAttr(attrs,"strategy"),
                                getAttr(attrs,"column"),
                                getAttr(attrs,"indexed"));
                cmd.setVersionMetaData(vermd);
                pushStack(vermd);
            }
            // New index
            else if (localName.equals("index"))
            {
                MetaData md = getStack();
                IndexMetaData idxmd = new IndexMetaData(
                                getAttr(attrs,"name"),
                                getAttr(attrs,"table"),
                                getAttr(attrs,"unique"));
                if (md instanceof AbstractClassMetaData)
                {
                    AbstractClassMetaData cmd = (AbstractClassMetaData)md;
                    cmd.addIndex(idxmd);
                }
                else if (md instanceof AbstractMemberMetaData)
                {
                    AbstractMemberMetaData fmd = (AbstractMemberMetaData)md;
                    fmd.setIndexMetaData(idxmd);
                }
                else if (md instanceof JoinMetaData)
                {
                    JoinMetaData jmd = (JoinMetaData)md;
                    jmd.setIndexMetaData(idxmd);
                }
                else if (md instanceof AbstractElementMetaData)
                {
                    AbstractElementMetaData elmd = (AbstractElementMetaData)md;
                    elmd.setIndexMetaData(idxmd);
                }
                else if (md instanceof OrderMetaData)
                {
                    OrderMetaData omd = (OrderMetaData)md;
                    omd.setIndexMetaData(idxmd);
                }
                else if (md instanceof VersionMetaData)
                {
                    VersionMetaData vermd = (VersionMetaData)md;
                    vermd.setIndexMetaData(idxmd);
                }
                else if (md instanceof DiscriminatorMetaData)
                {
                    DiscriminatorMetaData dismd = (DiscriminatorMetaData)md;
                    dismd.setIndexMetaData(idxmd);
                }
                pushStack(idxmd);
            }
            // New unique constraint
            else if (localName.equals("unique"))
            {
                MetaData md = getStack();
                UniqueMetaData unimd = new UniqueMetaData(getAttr(attrs,"name"),
                                                          getAttr(attrs,"table"),
                                                          getAttr(attrs,"deferred"));
                if (md instanceof AbstractClassMetaData)
                {
                    AbstractClassMetaData cmd = (AbstractClassMetaData)md;
                    cmd.addUniqueConstraint(unimd);
                }
                else if (md instanceof AbstractMemberMetaData)
                {
                    AbstractMemberMetaData fmd = (AbstractMemberMetaData)md;
                    fmd.setUniqueMetaData(unimd);
                }
                else if (md instanceof JoinMetaData)
                {
                    JoinMetaData jmd = (JoinMetaData)md;
                    jmd.setUniqueMetaData(unimd);
                }
                else if (md instanceof AbstractElementMetaData)
                {
                    AbstractElementMetaData elmd = (AbstractElementMetaData)md;
                    elmd.setUniqueMetaData(unimd);
                }
                pushStack(unimd);
            }
            // New foreign key
            else if (localName.equals("foreign-key"))
            {
                MetaData md = getStack();
                ForeignKeyMetaData fkmd = new ForeignKeyMetaData(getAttr(attrs,"name"),
                                getAttr(attrs,"table"),
                                getAttr(attrs,"unique"),
                                getAttr(attrs,"deferred"),
                                getAttr(attrs,"delete-action"),
                                getAttr(attrs,"update-action"));
                if (md instanceof AbstractClassMetaData)
                {
                    AbstractClassMetaData cmd = (AbstractClassMetaData)md;
                    cmd.addForeignKey(fkmd);
                }
                else if (md instanceof AbstractMemberMetaData)
                {
                    AbstractMemberMetaData fmd = (AbstractMemberMetaData)md;
                    fmd.setForeignKeyMetaData(fkmd);
                }
                else if (md instanceof JoinMetaData)
                {
                    JoinMetaData jmd = (JoinMetaData)md;
                    jmd.setForeignKeyMetaData(fkmd);
                }
                else if (md instanceof AbstractElementMetaData)
                {
                    AbstractElementMetaData elmd = (AbstractElementMetaData)md;
                    elmd.setForeignKeyMetaData(fkmd);
                }
                pushStack(fkmd);
            }
            // New order
            else if (localName.equals("order"))
            {
                OrderMetaData ormd = new OrderMetaData(getAttr(attrs, "column"),
                                                       getAttr(attrs, "indexed"),
                                                       getAttr(attrs, "mapped-by"));
                AbstractMemberMetaData fmd = (AbstractMemberMetaData)getStack();
                fmd.setOrderMetaData(ormd);
                pushStack(ormd);
            }
            // Embedded
            else if (localName.equals("embedded"))
            {
                MetaData md = getStack();
                EmbeddedMetaData emd = new EmbeddedMetaData(md,
                                                            getAttr(attrs,"owner-field"),
                                                            getAttr(attrs,"null-indicator-column"),
                                                            getAttr(attrs,"null-indicator-value"));
                if (md instanceof AbstractMemberMetaData)
                {
                    AbstractMemberMetaData fmd = (AbstractMemberMetaData)md;
                    fmd.setEmbeddedMetaData(emd);
                }
                else if (md instanceof KeyMetaData)
                {
                    KeyMetaData kmd = (KeyMetaData)md;
                    kmd.setEmbeddedMetaData(emd);

View Full Code Here

     */
    protected void copyMembersFromInterface(InterfaceMetaData imd)
    {
        for (int i=0; i<imd.getNoOfInheritedManagedMembers()+imd.getNoOfManagedMembers(); i++)
        {
            FieldMetaData fmd = new BCELFieldMetaData(this, imd.getMetaDataForManagedMemberAtAbsolutePosition(i));
            addMember(fmd);
        }
    }

View Full Code Here

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Related Classes of org.jpox.metadata.FieldMetaData

org.jpox.enhancer.bcel.metadata.BCELClassMetaData

org.jpox.jdo.metadata.JDOAnnotationReader

org.jpox.jdo.metadata.JDOAnnotationUtils

org.jpox.jdo.metadata.JDOMetaDataHandler

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