Examples of org.apache.openjpa.meta.FieldMetaData

org.apache.openjpa.meta.FieldMetaData
Metadata for a managed class field. @author Abe White

            else if (usesClsString == Boolean.FALSE)
                args = new Class[]{ String.class };
        } else if (_meta.isOpenJPAIdentity()) {
            // new <type>Identity (XXX.class, <pk>);
            loadManagedInstance(code, false);
            FieldMetaData pk = _meta.getPrimaryKeyFields()[0];
            addGetManagedValueCode(code, pk);
            if (pk.getDeclaredTypeCode() == JavaTypes.PC)
                addExtractObjectIdFieldValueCode(code, pk);
            if (_meta.getObjectIdType() == ObjectId.class)
                args = new Class[]{ Class.class, Object.class };
            else if (_meta.getObjectIdType() == Date.class)
                args = new Class[]{ Class.class, Date.class };
            else
                args = new Class[]{ Class.class, pk.getObjectIdFieldType() };
        }


        code.invokespecial().setMethod(oidType, "<init>", void.class, args);
        if (!_meta.isOpenJPAIdentity() && _meta.isObjectIdTypeShared())
            code.invokespecial().setMethod(ObjectId.class, "<init>",

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        // allow users with version or auto-assigned pk fields to manually 
        // construct a "detached" instance, so check these before taking into 
        // account non-existent detached state


        // consider detached if version is non-default
        FieldMetaData version = _meta.getVersionField();
        if (state != Boolean.TRUE && version != null) {
            // if (<version> != <default>)
            //    return true;
            loadManagedInstance(code, false);
            addGetManagedValueCode(code, version);

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            unlock();
        }
    }


    public double fetchDouble(int field) {
        FieldMetaData fmd = _meta.getField(field);
        if (!fmd.isExternalized())
            return fetchDoubleField(field);


        Object val = fetchField(field, false);
        return ((Number) fmd.getExternalValue(val, _broker)).doubleValue();
    }

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            unlock();
        }
    }


    public float fetchFloat(int field) {
        FieldMetaData fmd = _meta.getField(field);
        if (!fmd.isExternalized())
            return fetchFloatField(field);


        Object val = fetchField(field, false);
        return ((Number) fmd.getExternalValue(val, _broker)).floatValue();
    }

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            unlock();
        }
    }


    public int fetchInt(int field) {
        FieldMetaData fmd = _meta.getField(field);
        if (!fmd.isExternalized())
            return fetchIntField(field);


        Object val = fetchField(field, false);
        return ((Number) fmd.getExternalValue(val, _broker)).intValue();
    }

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            unlock();
        }
    }


    public long fetchLong(int field) {
        FieldMetaData fmd = _meta.getField(field);
        if (!fmd.isExternalized())
            return fetchLongField(field);


        Object val = fetchField(field, false);
        return ((Number) fmd.getExternalValue(val, _broker)).longValue();
    }

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            unlock();
        }
    }


    public Object fetchObject(int field) {
        FieldMetaData fmd = _meta.getField(field);
        if (!fmd.isExternalized())
            return fetchObjectField(field);


        Object val = fetchField(field, false);
        return fmd.getExternalValue(val, _broker);
    }

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            unlock();
        }
    }


    public short fetchShort(int field) {
        FieldMetaData fmd = _meta.getField(field);
        if (!fmd.isExternalized())
            return fetchShortField(field);


        Object val = fetchField(field, false);
        return ((Number) fmd.getExternalValue(val, _broker)).shortValue();
    }

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            unlock();
        }
    }


    public String fetchString(int field) {
        FieldMetaData fmd = _meta.getField(field);
        if (!fmd.isExternalized())
            return fetchStringField(field);


        Object val = fetchField(field, false);
        return (String) fmd.getExternalValue(val, _broker);
    }

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            unlock();
        }
    }


    public void storeBoolean(int field, boolean externalVal) {
        FieldMetaData fmd = _meta.getField(field);
        if (!fmd.isExternalized())
            storeBooleanField(field, externalVal);
        else {
            Object val = (externalVal) ? Boolean.TRUE : Boolean.FALSE;
            storeField(field, fmd.getFieldValue(val, _broker));
        }
    }

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