com.amazon.carbonado.synthetic

Class SyntheticStorableReferenceBuilder<S extends Storable>

java.lang.Object

com.amazon.carbonado.synthetic.SyntheticStorableReferenceBuilder<S>

All Implemented Interfaces:

SyntheticBuilder

public class SyntheticStorableReferenceBuilder<S extends Storable>
extends java.lang.Object
implements SyntheticBuilder

A SyntheticStorableReference defines new kinds of Storables from an existing master storable. This is used in situations when additional information about a storable needs to be tracked -- eg, for an index, or for caching. The storable may optionally have completely new, synthetic properties added.

All primary key properties of the master storable will also be provided by the derived storable. Three special methods will be provided:

• getMaster - retrieves the original storable
• setAllProperties - sets the properties the syntheticReference has in common with the master to the values of the master instance
• isConsistent - verifies that the properties the syntheticReference has in common with the master are consistent with an instance of the master, meaning that they are in the same state and, if set, equal.

Author:

Brian S O'Neill, Don Schneider, David Rosenstrauch

Nested Class Summary

Nested classes/interfaces inherited from interface com.amazon.carbonado.synthetic.SyntheticBuilder

SyntheticBuilder.ClassNameProvider

Constructor Summary

Constructors

Constructor and Description
SyntheticStorableReferenceBuilder(java.lang.Class<S> storableClass, boolean isUnique)
SyntheticStorableReferenceBuilder(java.lang.Class<S> storableClass, java.lang.String baseName, boolean isUnique)

Method Summary

Methods

Modifier and Type	Method and Description
SyntheticKey	addAlternateKey() Add an alternate key to be built.
SyntheticIndex	addIndex() Add an index to the set managed by this builder.
SyntheticProperty	addKeyProperty(java.lang.String name, Direction direction) Add a property to the primary key which is a member of the Storable type being referenced by this one.
SyntheticKey	addPrimaryKey() Add a primary key to be built.
SyntheticProperty	addProperty(java.lang.String name, java.lang.Class type) Add a property to the set managed by this builder.
SyntheticProperty	addProperty(SyntheticProperty prop) Add an externally defined synthetic property to the list
java.lang.Class<? extends Storable>	build() Convenience method to generate the class.
void	copyFromMaster(Storable indexEntry, S master) Deprecated. call getReferenceAccess
void	copyToMasterPrimaryKey(Storable indexEntry, S master) Deprecated. call getReferenceAccess
java.util.Comparator<? extends Storable>	getComparator() Deprecated. call getReferenceAccess
java.lang.Object	getName()
SyntheticStorableReferenceAccess<S>	getReferenceAccess() Build and return access to the generated storable reference class.
java.lang.Class<? extends Storable>	getStorableClass()
java.util.List<SyntheticProperty>	getUserProps()
boolean	hasProperty(java.lang.String name) Check to see if a particular property has already been added to the list of properties to generate
boolean	isConsistent(Storable indexEntry, S master) Deprecated. call getReferenceAccess
boolean	isUnique() True if the generated derived class should be considered unique.
boolean	isVersioned() Returns true if a property with the version attribute has been addded
ClassFileBuilder	prepare()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SyntheticStorableReferenceBuilder

public SyntheticStorableReferenceBuilder(java.lang.Class<S> storableClass,
                                 boolean isUnique)

Parameters:

storableClass - class of the storable that will be referenced by this synthetic. The name for the synthetic storable will be based on this class's name, decorated with the properties which participate in the primary key for the synthetic storable.

SyntheticStorableReferenceBuilder

public SyntheticStorableReferenceBuilder(java.lang.Class<S> storableClass,
                                 java.lang.String baseName,
                                 boolean isUnique)

Parameters:

storableClass - class of the storable that will be referenced by this synthetic

baseName - of the generated synthetic. Note that for some repositories this name will be visible across the entire repository, so it is good practice to include namespace information to guarantee uniqueness.

isUnique - true if the properties that are explicitly identified as primary key properites are sufficient to uniquely identify the index object.

Method Detail

prepare

public ClassFileBuilder prepare()
                         throws SupportException

Specified by:

prepare in interface SyntheticBuilder

Returns:

ClassFileBuilder ready for further decoration or building

Throws:

SupportException

getReferenceAccess

public SyntheticStorableReferenceAccess<S> getReferenceAccess()

Build and return access to the generated storable reference class.

Since:

1.2.1

getStorableClass

public java.lang.Class<? extends Storable> getStorableClass()
                                                     throws java.lang.IllegalStateException

Specified by:

getStorableClass in interface SyntheticBuilder

Returns:

the generated class file for this builder. Note that proper operation requires that SyntheticBuilder.prepare() already have been called prior to calling this method.

Throws:

java.lang.IllegalStateException - if build has not yet been called.

build

public java.lang.Class<? extends Storable> build()
                                          throws SupportException

Description copied from interface: SyntheticBuilder

Convenience method to generate the class. Build will always call SyntheticBuilder.prepare() and return the result of generating the class from that classfile. If the caller does not wish to regenerate the class from scratch, use SyntheticBuilder.getStorableClass() instead.

Specified by:

build in interface SyntheticBuilder

Throws:

SupportException

addKeyProperty

public SyntheticProperty addKeyProperty(java.lang.String name,
                               Direction direction)

Add a property to the primary key which is a member of the Storable type being referenced by this one.

Parameters:

name -

addProperty

public SyntheticProperty addProperty(java.lang.String name,
                            java.lang.Class type)

Description copied from interface: SyntheticBuilder

Add a property to the set managed by this builder.

Specified by:

addProperty in interface SyntheticBuilder

Parameters:

name - of the property

type - of the property

Returns:

property specification which can be further refined

See Also:

SyntheticStorableBuilder.addProperty(java.lang.String, java.lang.Class)

addProperty

public SyntheticProperty addProperty(SyntheticProperty prop)

Description copied from interface: SyntheticBuilder

Add an externally defined synthetic property to the list

Specified by:

addProperty in interface SyntheticBuilder

Parameters:

prop - to add

Returns:

original synthetic property as a convenience

See Also:

SyntheticStorableBuilder.addProperty(com.amazon.carbonado.synthetic.SyntheticProperty)

hasProperty

public boolean hasProperty(java.lang.String name)

Description copied from interface: SyntheticBuilder

Check to see if a particular property has already been added to the list of properties to generate

Specified by:

hasProperty in interface SyntheticBuilder

getUserProps

public java.util.List<SyntheticProperty> getUserProps()

Returns:

Returns the indexProps.

addPrimaryKey

public SyntheticKey addPrimaryKey()

Description copied from interface: SyntheticBuilder

Add a primary key to be built.

Specified by:

addPrimaryKey in interface SyntheticBuilder

Returns:

key to be decorated with property values defining the primary key

addAlternateKey

public SyntheticKey addAlternateKey()

Description copied from interface: SyntheticBuilder

Add an alternate key to be built.

Specified by:

addAlternateKey in interface SyntheticBuilder

Returns:

key to be decorated with property values defining the alternate key

addIndex

public SyntheticIndex addIndex()

Description copied from interface: SyntheticBuilder

Add an index to the set managed by this builder. All indexes added this way will be in addition to the primary and alternate key indexes.

Specified by:

addIndex in interface SyntheticBuilder

Returns:

index to be decorated with property values defining the index

getName

public java.lang.Object getName()

isUnique

public boolean isUnique()

True if the generated derived class should be considered unique. If non-unique, all properties are added to the primary key so there will be no conflicts between various derived classes derived from the same base storable.

isVersioned

public boolean isVersioned()

Description copied from interface: SyntheticBuilder

Returns true if a property with the version attribute has been addded

Specified by:

isVersioned in interface SyntheticBuilder

copyToMasterPrimaryKey

@Deprecated
public void copyToMasterPrimaryKey(Storable indexEntry,
                                     S master)
                            throws FetchException

Deprecated. call getReferenceAccess

Sets all the primary key properties of the given master, using the applicable properties of the given index entry.

Parameters:

indexEntry - source of property values

master - master whose primary key properties will be set

Throws:

FetchException

copyFromMaster

@Deprecated
public void copyFromMaster(Storable indexEntry,
                             S master)
                    throws FetchException

Deprecated. call getReferenceAccess

Sets all the properties of the given index entry, using the applicable properties of the given master.

Parameters:

indexEntry - index entry whose properties will be set

master - source of property values

Throws:

FetchException

isConsistent

@Deprecated
public boolean isConsistent(Storable indexEntry,
                              S master)
                     throws FetchException

Deprecated. call getReferenceAccess

Returns true if the properties of the given index entry match those contained in the master, excluding any version property. This will always return true after a call to copyFromMaster.

Parameters:

indexEntry - index entry whose properties will be tested

master - source of property values

Throws:

FetchException

getComparator

@Deprecated
public java.util.Comparator<? extends Storable> getComparator()

Deprecated. call getReferenceAccess

Returns a comparator for ordering index entries.