Package com.iizix.prop

Class AbstractReference<TARGET extends IPropCnr>

java.lang.Object
com.iizix.prop.GProp<ReferenceString>
com.iizix.prop.AbstractReference<TARGET>
All Implemented Interfaces:
EventListener, IGProp<ReferenceString>, IPropReference, IReferencingGProp, Cloneable
Direct Known Subclasses:
AbstractBaseRelativeReference, FixedVirtualizedAbstractReference, ServerConfigEnvReference, VSReference
public abstract class AbstractReference<TARGET extends IPropCnr> extends GProp<ReferenceString> implements IPropReference, IReferencingGProp
The Abstract Reference property class hold the reference to another property.
Author:
Christopher Mindus

  • Field Details

    • ERROR_ID

      public static final String ERROR_ID
      The ID of the property error.
      See Also:

    • QUICK_FIX_DELETE_PROP

      public static final String QUICK_FIX_DELETE_PROP
      Quick-fix ID for delete property, defined in "com.iizigo.quickfix.fixer.DeleteProperty".
      See Also:

    • reference

      protected PropReference reference
      The instance of the property reference.

    • hasBeenValidated

      protected boolean hasBeenValidated
      Validation completed flag.

  • Constructor Details

    • AbstractReference

      protected AbstractReference()
      Creates a Abstract Reference property with no name and with a null value.

    • AbstractReference

      protected AbstractReference(Atom propertyAtom)
      Creates a Abstract Reference property with the specified name with a null value.
      Parameters:
      propertyAtom - the property atom.

    • AbstractReference

      protected AbstractReference(Atom propertyAtom, String newValue)
      Creates a Abstract Reference property with the specified name and value.
      Parameters:
      propertyAtom - the property atom.
      newValue - the new string value for the property.

  • Method Details

    • doPostResolve

      protected boolean doPostResolve()
      Returns if resolving of this reference should be done in post- (true) or pre-stage (false).
      Returns:
      false by default, i.e. always in first pre-stage.

    • getFixedTarget

      protected TARGET getFixedTarget()
      Support for a fixed reference.

      Override to provide the support.

      Returns:
      The fixed reference to return in cases the target reference is needed, and also serves as a verification if a new reference should be created or not. Returning null causes normal behavior (default).

    • clearFixedTarget

      protected void clearFixedTarget()
      Called to clear the fixed reference in case the reference is changed. This will revert back to normal processing.

      The "clone" method does not change to be overridden to clear the fixed target as this method is called during cloning.

      Override to provide the support. It is important to also implement this method along with "getFixedTarget".

    • getAbsoluteReference

      public final String getAbsoluteReference()
      Gets the absolute reference as a String.
      Returns:
      A non-relative absolute reference string, empty string if reference property is disposed of, or null if none exists.

    • setPropValue

      public final boolean setPropValue(String newValue) throws PropTypeException, PropValidateException
      Sets a new value for this property. If any listener is present and the value has changed compare to the last value, the listener is informed.
      Parameters:
      newValue - the new value.
      Returns:
      boolean true for value has changed, false for same value as current value.
      Throws:
      PropTypeException - If the property is read-only.
      PropValidateException - When the constraints are not met.

    • validatePropType

      public final void validatePropType(Object newValue) throws PropTypeException
      Validates that the value to set is of ReferenceString instance.

      Note: When this method is called, synchronization is done at the property itself, so no synchronization on the tree should be done.

      Specified by:
      validatePropType in interface IGProp<TARGET extends IPropCnr>
      Specified by:
      validatePropType in class GProp<ReferenceString>
      Parameters:
      newValue - The new value to set.
      Throws:
      PropTypeException - when the new value isn't of the correct class.

    • validatePropValue

      public final void validatePropValue(Object newValue) throws PropException
      Validates the value to set. Subclasses can override this method to perform optional value validation. No validation is performed in this method.

      Note: When this method is called, synchronization is done at the property itself, so no synchronization on the tree should be done.

      Specified by:
      validatePropValue in interface IGProp<TARGET extends IPropCnr>
      Overrides:
      validatePropValue in class GProp<ReferenceString>
      Parameters:
      newValue - The new value to set.
      Throws:
      PropException - when the new value doesn't validate correctly.

    • modifyPropValue

      protected final int modifyPropValue(Object oldValue, Object newValue, PropMgr propMgr)
      Called when setting a new value for this property.
      Overrides:
      modifyPropValue in class GProp<ReferenceString>
      Parameters:
      oldValue - The old value.
      newValue - The new value.
      propMgr - The property manager for remote change, null for local.
      Returns:
      -1 for not processed.

    • getValueClasses

      public final Class<?>[] getValueClasses()
      Gets the list of possible native Java classes that can be used to set a value using setPropertyValue, in order of importance. Note that loss of precision in data if e.g. an Float property accepts a Double. However, the setPropertyValue throws IllegalArgumentException if the range in invalid, e.g. conversion of a Integer to a Byte, and the value is not -127 to 128.
      Specified by:
      getValueClasses in interface IGProp<TARGET extends IPropCnr>
      Specified by:
      getValueClasses in class GProp<ReferenceString>
      Returns:
      The array of Java classes that can be accepted in the setPropertyValue method. The first type is the "native" or most preferred type. The array is at least one item in length and never null.

    • appendPropValue

      protected void appendPropValue(PropMgr propertyManager, SendTransaction trans, Object value)
      Appends the string property value. If uninitialized, an empty string is appended.
      Specified by:
      appendPropValue in class GProp<ReferenceString>
      Parameters:
      propertyManager - the property manager instance.
      trans - transaction to append the properties to.
      value - the value to append to the transaction, a reference to the current property value.

    • initializeValue

      public boolean initializeValue(PropMgr propertyManager, ReadTransaction trans) throws PropException
      Initializes the property value from a transaction.
      Specified by:
      initializeValue in class GProp<ReferenceString>
      Parameters:
      propertyManager - the property manager.
      trans - the transaction to initialize the property with.
      Returns:
      true if the value has changed, false otherwise.
      Throws:
      PropException

    • getReference

      public final String getReference()
      Gets the reference string.
      Returns:
      The reference string or null if not set.

    • getPropValue0

      protected final Object getPropValue0(Object value, int index) throws Exception
      Gets the property value in another class form than the "native" one. This method tries conversion of a "native" property value into another class type. This method is used when filling in a POJO variable (Plain Old Java Object Field) from a "native" property value.
      Specified by:
      getPropValue0 in class GProp<ReferenceString>
      Parameters:
      value - The property value.
      index - The index in the Class array returned by getValueClasses().
      Returns:
      The property value in the requested class, after conversion.
      Throws:
      Exception - Other exceptions that could occur.

    • toNativeValue0

      protected final Object toNativeValue0(Object value, int index) throws Exception
      Tries conversion of possibly accepted properties values using the setPropertyValue method into the most preferred property value type. If the input value already is of the preferred type, the same object is returned.
      Specified by:
      toNativeValue0 in class GProp<ReferenceString>
      Parameters:
      value - The input value to convert to native value.
      index - The index in the array returned by getValueClasses(), or -1 if not found.
      Returns:
      The converted input value in the preferred property value object type.
      Throws:
      Exception - For conversion exceptions.

    • disposeReference

      protected final void disposeReference()
      Disposes of the reference and possible cached target.

    • onReferenceDisposed

      protected void onReferenceDisposed()
      Called when the reference is disposed of.

    • onPropDispose

      protected final void onPropDispose()
      Property disposed of: dispose of reference.
      Overrides:
      onPropDispose in class GProp<ReferenceString>

    • clone

      public AbstractReference<TARGET> clone()
      Cloning must duplicate reference into new tree.
      Overrides:
      clone in class GProp<ReferenceString>

    • equalValues

      protected final Object equalValues(GProp<?> compareTo, ReferenceString thisValue, ReferenceString compareValue, int how)
      Checks for property value equality. The object is of the correct type for the respective property type. The Atoms and other properties such as Private/Extends has already been checked for equality or correctness.
      Overrides:
      equalValues in class GProp<ReferenceString>
      Parameters:
      compareTo - The comparing-to property that contains the value.
      thisValue - This property value (for synchronization reasons).
      compareValue - Another property value.
      how - Flags EQC_* values for equal checking.
      Returns:
      The property not being equal, null for equal (both values null).

    • equalsErrors

      protected final boolean equalsErrors(PropError pe1, PropError pe2, int how)
      Processes error property verification. The default processing is to verify the two error properties pe1 and pe2 for equality if includeErrors is 0 or 1, and returns true if the value is 2=no comparison with error properties.

      Override to verify property errors for reference properties.

      Overrides:
      equalsErrors in class GProp<ReferenceString>
      Parameters:
      pe1 - The first error property, may be null.
      pe2 - The second error property, may be null.
      how - Flags EQC_* values for equal checking.
      Returns:
      Equality flag depending on includeErrors value.

    • getPropertyClass

      public abstract Class<?> getPropertyClass()
      Gets the class wanted.
      Returns:
      The property class that should be referenced.

    • onEventSelf

      public void onEventSelf(GEvent event)
      Called when a property event is send to this property.

      A subclass can override this method to perform appropriate processing and is not required to call super.onEventSelf(e).

      Specified by:
      onEventSelf in interface IGProp<TARGET extends IPropCnr>
      Overrides:
      onEventSelf in class GProp<ReferenceString>
      Parameters:
      event - The property event.

    • onReferenceEvent

      protected void onReferenceEvent(ResolveReferencesEvent event)
      Called to perform reference resolving. A property should override this method if it needs to perform reference resolving and validation.

      Subclasses override this method and only subclasses extending PropCnr needs to call super.onReferenceEvent(ResolveReferenceEvent event).

      Overrides:
      onReferenceEvent in class GProp<ReferenceString>
      Parameters:
      event - The resolve references event.

    • onProjectNameChanged

      protected final void onProjectNameChanged(ProjectNameEvent event)
      Called when a project name has been changed.
      Parameters:
      event - The project name event.

    • createUpdateReference

      protected final void createUpdateReference(PropReference ref, boolean doReCheck, ResolveReferencesEvent event)
      Resolves or creates the reference.
      Parameters:
      ref - The property reference.
      doReCheck - Flag to ignore existing reference and re-check it for sanity.
      event - The event that triggered this request.

    • updateReference

      protected final void updateReference(GEvent event)
      Called to establish a new reference after name change or parent-hood.

    • getLookupPropReference

      protected String getLookupPropReference(ReferenceString name)
      Creates the reference string to look-up from the ReferenceString. Override this method for e.g. Base or Fixed Relative referencing.
      Parameters:
      name - The reference name.
      Returns:
      The property reference string to look-up.

    • setLookedUpReference

      protected String setLookedUpReference(String name)
      Sets the reference found that also has been validated. This method gives the opportunity for a subclass to remove e.g. the Base or Fixed Relative reference from the string start.
      Parameters:
      name - The full reference.
      Returns:
      The reference to set in this property as ReferenceString.

    • checkCreateReference

      protected void checkCreateReference(GEvent event)
      Checks for tree to be valid in order to create the reference. If OK and reference is not created, this will be done.

      Otherwise a validation is just performed.

    • onPropParentChanged

      protected void onPropParentChanged(PropCnr oldParent, PropCnr newParent)
      Called when parent changed.
      Overrides:
      onPropParentChanged in class GProp<ReferenceString>
      Parameters:
      oldParent - The old parent (or null if none).
      newParent - The new parent (or null if none).

    • clearError

      protected void clearError()
      Clears the property error.

    • assignNotFoundError

      protected void assignNotFoundError(PropReference ref)
      Assigns not found error.

    • assignError

      protected void assignError(String err)
      Assigns a property error message of ERROR severity with DeleteProperty quick-fix.

    • onReferenceEvent

      public void onReferenceEvent(PropReference ref, IPropReference.ReferenceChangeEvent event, GEvent triggerEvent)
      Called when a property reference event occurs. The events are ReferenceChangeEvent.FOUND, FOUND_WRONG_CLASS, RENAMED, MOVED, NEW_PROPERTY, BROKEN.
      Specified by:
      onReferenceEvent in interface IPropReference
      Parameters:
      ref - The property reference object.
      event - The event.
      triggerEvent - The event that triggered this reference event, null for none.

    • changeReference

      protected void changeReference(String oldName, String newName, PropReference ref)
      Called to update a reference from an old name to a new name. This will set the new property value as well as to perform required refactoring operations.
      Parameters:
      oldName - The old name.
      newName - The new name.
      ref - The current reference instance.

    • onRefactored

      protected void onRefactored(String oldName, String newName)
      Called when the property is refactored. This method is called after rename of properties have been done. Override to process.
      Parameters:
      oldName - The old name.
      newName - The new name.

    • isValid

      public boolean isValid()
      Checks if the resolving of the reference is valid with the automatic resolving mechanism. Attempt to resolve again is always done depending on the doResolve flag.
      Returns:
      1 (one) if valid, 0 (zero) if not valid, -1 (minus one) to ignore potential problem because the property tree is loading.

    • wouldValidate

      public String wouldValidate(GProp<?> anyPropertyInTree)
      Checks if the reference would be valid if this property is attached to a root property.
      Parameters:
      anyPropertyInTree - Any property attached to a root.
      Returns:
      null if it would validate, otherwise the error reason.

    • getTargetReference

      public TARGET getTargetReference()
      Gets the target reference also trying to resolve the reference, i.e. using automatic resolving mechanism.
      Returns:
      The target reference instance, or null if not found.

    • getTargetReference

      public TARGET getTargetReference(GProp<?> anyPropertyInTree)
      Gets the target reference also trying to resolve the reference, i.e. using automatic resolving mechanism.
      Returns:
      The target reference instance, or null if not found.

    • isReferencingMultipleTargets

      public final boolean isReferencingMultipleTargets()
      Gets if this referencing property is of single-reference type or that can have between zero and many references.

      The default is false, i.e. one single reference.

      Specified by:
      isReferencingMultipleTargets in interface IReferencingGProp
      Returns:
      true if there are multiple references, false if there is just still one.

    • getDirectReferencedTarget

      public final IGProp<?> getDirectReferencedTarget()
      Gets the single-referenced target. Referencing properties that can have multiple targets should ALWAYS return null for this method and use the method getDirectReferencedTargetSet() instead.
      Specified by:
      getDirectReferencedTarget in interface IReferencingGProp
      Returns:
      The referenced property, or null for none. The default is that this method returns null unless overridden.

    • getDirectReferencedTargetSet

      public final Set<IGProp<?>> getDirectReferencedTargetSet()
      Gets the set of properties that this referencing property directly references. Referencing properties that only has a single target should ALWAYS return null for this method and use the method getDirectReferencedTarget() instead.
      Specified by:
      getDirectReferencedTargetSet in interface IReferencingGProp
      Returns:
      A set of properties, or null for none. The default is that this method returns null unless overridden.

    • getReferenceString

      protected ReferenceString getReferenceString()
      Gets the current reference string.
      Returns:
      The default is to return the ReferenceString using GProp.getPropValue(), so it may return null if no value is set.

    • paramString

      protected String paramString()
      Returns the parameter string representing the state of this event. This string is useful for debugging. Subclasses adds extra information to the string by preceding it with a comma followed by the extra information.
      Overrides:
      paramString in class GProp<ReferenceString>
      Returns:
      the parameter string of this event.

    • informResolved

      protected void informResolved()
      Called when the property has been resolved. Subclasses override this method to implement some behavior. The default implementation performs nothing, i.e. there is no need to call super.informResolved().

    • informError

      protected void informError()
      Called when the property has an error. Subclasses override this method to implement some behavior. The default implementation performs nothing, i.e. there is no need to call super.informError().

    • informClearError

      protected void informClearError()
      Called when the property has been cleared from error. Subclasses override this method to implement some behavior. The default implementation performs nothing, i.e. there is no need to call super.informClearError().

    • validateReferenceScope

      protected String validateReferenceScope(TARGET target)
      Called when the a property container has been renamed or moved in order to perform validation of the reference, e.g. if a base property has been moved out of scope. The implementor can assign or clear property errors by returning the error string.
      Parameters:
      target - Target reference to validate the scope of, i.e. the referenced property.
      Returns:
      The error message, or null for valid. Default implementation returns null.

    • getReferenceType

      public abstract IPropReference.IRefType getReferenceType()
      Gets the reference Type.
      Specified by:
      getReferenceType in interface IPropReference
      Specified by:
      getReferenceType in interface IReferencingGProp
      Returns:
      The reference type, generally a value from the enum IPropReference.RefType, otherwise a static final implementation of the reference type with locale support.

    • isReferenceValid

      public abstract boolean isReferenceValid(GProp<?> property)
      Validates the property reference that has been looked up.
      Specified by:
      isReferenceValid in interface IPropReference
      Parameters:
      property - The property to validate.
      Returns:
      true if valid, false otherwise.