agi.foundation.coverage

(agi.foundation.spatial-2024r1.jar)

Class AssetDefinition

java.lang.Object

agi.foundation.infrastructure.DefinitionalObject

agi.foundation.coverage.AssetDefinition

All Implemented Interfaces:

ICloneWithContext, IEnumerateDependencies, IEquatableDefinition, IFreezable

public class AssetDefinition
extends DefinitionalObject

Defines the 'asset' which can provide coverage and the AccessQuery (get / set) which can determine whether or not it provides coverage at a particular time.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AssetDefinition(AssetDefinition existingInstance, CopyContext context) Initializes a new instance as a copy of an existing instance.
	AssetDefinition(Object assetObject, AccessQuery query) Create a new instance based on the given asset and its associated AccessQuery (get / set).
	AssetDefinition(Object assetObject, AccessQuery query, boolean isRequired) Create a new instance based on the given asset and its associated AccessQuery (get / set).

Method Summary

Modifier and Type	Method and Description
protected boolean	checkForSameDefinition(AssetDefinition other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
protected boolean	checkForSameDefinition(DefinitionalObject other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
Object	clone(CopyContext context) Clones this object using the specified context.
protected int	computeCurrentDefinitionHashCode() Computes a hash code based on the current properties of this object.
void	enumerateDependencies(DependencyEnumerator enumerator) Enumerates the dependencies of this object by calling DependencyEnumerator#enumerate(T) for each object that this object directly depends upon.
AccessQuery	getAccessQuery() Gets the query involving the AssetObject (get / set) that must be satisfied for this asset to provide coverage.
Object	getAssetObject() Gets the object which represents the asset.
boolean	getIsRequiredForCoverage() Gets a value indicating whether this asset must provide coverage in order for any others to provide coverage.
void	setAccessQuery(AccessQuery value) Sets the query involving the AssetObject (get / set) that must be satisfied for this asset to provide coverage.
void	setAssetObject(Object value) Sets the object which represents the asset.
void	setIsRequiredForCoverage(boolean value) Sets a value indicating whether this asset must provide coverage in order for any others to provide coverage.

Methods inherited from class agi.foundation.infrastructure.DefinitionalObject

areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, dictionaryItemsAreSameDefinition, freeze, freezeAggregatedObjects, getCollectionHashCode, getCollectionHashCode, getCollectionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDictionaryHashCode, getIsFrozen, isSameDefinition, throwIfFrozen

Methods inherited from class java.lang.Object

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

Constructor Detail

AssetDefinition

public AssetDefinition(Object assetObject,
                       AccessQuery query)

Create a new instance based on the given asset and its associated AccessQuery (get / set).

Parameters:

assetObject - The object which represents the asset. In most cases, this should be a reference to the IServiceProvider which is acting as the actual instance of the asset, with the query defining how the asset communicates with the coverage target.

query - The query which must be satisfied for this asset to provide coverage.

AssetDefinition

public AssetDefinition(Object assetObject,
                       AccessQuery query,
                       boolean isRequired)

Create a new instance based on the given asset and its associated AccessQuery (get / set).

Parameters:

assetObject - The object which represents the asset. In most cases, this should be a reference to the IServiceProvider which is acting as the actual instance of the asset, with the query defining how the asset communicates with the coverage target.

query - The query which must be satisfied for this asset to provide coverage.

isRequired - A flag indicating whether this asset must be satisfied in order for any assets to provide coverage.

AssetDefinition

protected AssetDefinition(@Nonnull
                          AssetDefinition existingInstance,
                          @Nonnull
                          CopyContext context)

Initializes a new instance as a copy of an existing instance.

See ICloneWithContext.clone(CopyContext) for more information about how to implement this constructor in a derived class.

Parameters:

existingInstance - The existing instance to copy.

context - A CopyContext that controls the depth of the copy.

Throws:

ArgumentNullException - Thrown when existingInstance or context is null.

Method Detail

clone

public Object clone(CopyContext context)

Clones this object using the specified context.

This method should be implemented to call a copy constructor on the class of the object being cloned. The copy constructor should take the CopyContext as a parameter in addition to the existing instance to copy. The copy constructor should first call CopyContext.addObjectMapping(T, T) to identify the newly constructed instance as a copy of the existing instance. It should then copy all fields, using CopyContext.updateReference(T) to copy any reference fields.

A typical implementation of ICloneWithContext:

public static class MyClass implements ICloneWithContext {
    public MyClass(MyClass existingInstance, CopyContext context) {
        context.addObjectMapping(existingInstance, this);
        someReference = context.updateReference(existingInstance.someReference);
    }

    @Override
    public final Object clone(CopyContext context) {
        return new MyClass(this, context);
    }

    private Object someReference;
}

In general, all fields that are reference types should be copied with a call to CopyContext.updateReference(T). There are a couple of exceptions:

1. Fields that are aggregate parts of the object should always be copied. A referenced object is an aggregate if properties or methods on the object being copied can modify the externally-visible value of the referenced object.
2. If the semantics of the referenced object require that it have a single parent, owner, context, etc., and the object being copied is that parent, owner, or context, then the referenced object should always be copied.

If one of these exceptions applies, the CopyContext should be given an opportunity to update the reference before the reference is copied explicitly. Use CopyContext.updateReference(T) to update the reference. If CopyContext.updateReference(T) returns the original object, indicating that the context does not have a replacement registered, then copy the object manually by invoking a Clone method, a copy constructor, or by manually constructing a new instance and copying the values.

alwaysCopy = context.updateReference(existingInstance.alwaysCopy);
if (existingInstance.alwaysCopy != null && alwaysCopy == existingInstance.alwaysCopy) {
    alwaysCopy = (AlwaysCopy) existingInstance.alwaysCopy.clone(context);
}

If you are implementing an evaluator (a class that implements IEvaluator), the IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) method shares some responsibilities with the copy context constructor. Code duplication can be avoided by doing the following:

1. For references to other evaluators ONLY, simply assign the reference in the constructor instead of calling CopyContext.updateReference(T). You should still call CopyContext.updateReference(T) on any references to non-evaluators.
2. Call IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) as the last line in the constructor and pass it the same CopyContext passed to the constructor.
3. Implement IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) as normal. See the reference documentation for IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) for more information on implementing that method.

public MyClass(MyClass existingInstance, CopyContext context) {
    super(existingInstance, context);
    someReference = context.updateReference(existingInstance.someReference);
    evaluatorReference = existingInstance.evaluatorReference;
    updateEvaluatorReferences(context);
}

@Override
public void updateEvaluatorReferences(CopyContext context) {
    evaluatorReference = context.updateReference(evaluatorReference);
}

@Override
public Object clone(CopyContext context) {
    return new MyClass(this, context);
}

private Object someReference;
private IEvaluator evaluatorReference;

Specified by:

clone in interface ICloneWithContext

Specified by:

clone in class DefinitionalObject

Parameters:

context - The context to use to perform the copy.

Returns:

A new instance which is a copy of this object.

checkForSameDefinition

protected final boolean checkForSameDefinition(DefinitionalObject other)

Checks to determine if another instance has the same definition as this instance and returns true if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return false for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IEquatableDefinition.isSameDefinition(java.lang.Object).

Specified by:

checkForSameDefinition in class DefinitionalObject

Parameters:

other - The other instance to compare to this one.

Returns:

true if the two objects are defined equivalently; otherwise false.

checkForSameDefinition

protected boolean checkForSameDefinition(@Nullable
                                         AssetDefinition other)

Checks to determine if another instance has the same definition as this instance and returns true if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return false for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IEquatableDefinition.isSameDefinition(java.lang.Object).

Parameters:

other - The other instance to compare to this one.

Returns:

true if the two objects are defined equivalently; otherwise false.

computeCurrentDefinitionHashCode

protected int computeCurrentDefinitionHashCode()

Computes a hash code based on the current properties of this object. Derived classes MUST override this method and compute a hash code that combines: a unique hash code seed, the base implementation result, and the hash codes of all new fields introduced by the derived class which are used in the AssetDefinition.checkForSameDefinition(agi.foundation.infrastructure.DefinitionalObject) method.

Overrides:

computeCurrentDefinitionHashCode in class DefinitionalObject

Returns:

The computed hash code.

enumerateDependencies

public void enumerateDependencies(DependencyEnumerator enumerator)

Enumerates the dependencies of this object by calling DependencyEnumerator#enumerate(T) for each object that this object directly depends upon. Derived classes which contain additional dependencies MUST override this method, call the base implementation, and enumerate dependencies introduced by the derived class.

Specified by:

enumerateDependencies in interface IEnumerateDependencies

Overrides:

enumerateDependencies in class DefinitionalObject

Parameters:

enumerator - The enumerator that is informed of the dependencies of this object.

getAssetObject

public final Object getAssetObject()

Gets the object which represents the asset. In most cases, this should be a reference to the IServiceProvider which is acting as the actual instance of the asset, with the AccessQuery (get / set) defining how the asset communicates with the coverage target.

setAssetObject

public final void setAssetObject(Object value)

Sets the object which represents the asset. In most cases, this should be a reference to the IServiceProvider which is acting as the actual instance of the asset, with the AccessQuery (get / set) defining how the asset communicates with the coverage target.

getAccessQuery

public final AccessQuery getAccessQuery()

Gets the query involving the AssetObject (get / set) that must be satisfied for this asset to provide coverage.

setAccessQuery

public final void setAccessQuery(AccessQuery value)

Sets the query involving the AssetObject (get / set) that must be satisfied for this asset to provide coverage.

getIsRequiredForCoverage

public final boolean getIsRequiredForCoverage()

Gets a value indicating whether this asset must provide coverage in order for any others to provide coverage.

setIsRequiredForCoverage

public final void setIsRequiredForCoverage(boolean value)

Sets a value indicating whether this asset must provide coverage in order for any others to provide coverage.