Package org.apache.sis.util
Interface LenientComparable
- All Known Implementing Classes:
AbstractCompleteness,AbstractContentInformation,AbstractCoordinateOperation,AbstractCRS,AbstractCS,AbstractDataEvaluation,AbstractDatum,AbstractElement,AbstractGeographicExtent,AbstractGeolocationInformation,AbstractIdentification,AbstractIdentifiedObject,AbstractLogicalConsistency,AbstractMathTransform,AbstractMathTransform.Inverse,AbstractMathTransform1D,AbstractMathTransform1D.Inverse,AbstractMathTransform2D,AbstractMathTransform2D.Inverse,AbstractMetadata,AbstractMetaquality,AbstractParameterDescriptor,AbstractParty,AbstractPositionalAccuracy,AbstractReferenceSystem,AbstractResult,AbstractSpatialRepresentation,AbstractTemporalAccuracy,AbstractTemporalQuality,AbstractThematicAccuracy,AlbersEqualArea,AzimuthalEquidistant,CassiniSoldner,CylindricalEqualArea,DatumShiftTransform,DefaultAbsoluteExternalPositionalAccuracy,DefaultAccuracyOfATimeMeasurement,DefaultAcquisitionInformation,DefaultAddress,DefaultAffineCS,DefaultAggregateInformation,DefaultAggregationDerivation,DefaultAlgorithm,DefaultApplicationSchemaInformation,DefaultAssociatedResource,DefaultAttributeGroup,DefaultBand,DefaultBasicMeasure,DefaultBoundingPolygon,DefaultBrowseGraphic,DefaultCartesianCS,DefaultCitation,DefaultCitationDate,DefaultCompletenessCommission,DefaultCompletenessOmission,DefaultCompoundCRS,DefaultCompoundCS,DefaultConceptualConsistency,DefaultConfidence,DefaultConformanceResult,DefaultConstraints,DefaultContact,DefaultConversion,DefaultCoordinateSystemAxis,DefaultCoupledResource,DefaultCoverageDescription,DefaultCoverageResult,DefaultCylindricalCS,DefaultDataFile,DefaultDataIdentification,DefaultDataQuality,DefaultDerivedCRS,DefaultDescriptiveResult,DefaultDigitalTransferOptions,DefaultDimension,DefaultDistribution,DefaultDistributor,DefaultDomainConsistency,DefaultEllipsoid,DefaultEllipsoidalCS,DefaultEngineeringCRS,DefaultEngineeringDatum,DefaultEnvironmentalRecord,DefaultEvaluationMethod,DefaultEvaluationReportInformation,DefaultEvent,DefaultExtendedElementInformation,DefaultExtent,DefaultFeatureCatalogueDescription,DefaultFeatureTypeInfo,DefaultFormat,DefaultFormatConsistency,DefaultFullInspection,DefaultGCP,DefaultGCPCollection,DefaultGeocentricCRS,DefaultGeodeticDatum,DefaultGeographicBoundingBox,DefaultGeographicCRS,DefaultGeographicDescription,DefaultGeometricObjects,DefaultGeorectified,DefaultGeoreferenceable,DefaultGriddedDataPositionalAccuracy,DefaultGridSpatialRepresentation,DefaultHomogeneity,DefaultIdentifier,DefaultImageCRS,DefaultImageDatum,DefaultImageDescription,DefaultIndirectEvaluation,DefaultIndividual,DefaultInstrument,DefaultKeywordClass,DefaultKeywords,DefaultLegalConstraints,DefaultLineage,DefaultLinearCS,DefaultMaintenanceInformation,DefaultMeasureDescription,DefaultMeasureReference,DefaultMedium,DefaultMetadata,DefaultMetadataExtensionInformation,DefaultMetadataScope,DefaultNominalResolution,DefaultNonQuantitativeAttributeAccuracy,DefaultNonQuantitativeAttributeCorrectness,DefaultObjective,DefaultOnlineResource,DefaultOperation,DefaultOperationChainMetadata,DefaultOperationMetadata,DefaultOperationMethod,DefaultOrganisation,DefaultParameterDescriptor,DefaultParameterDescriptorGroup,DefaultParameterValue,DefaultParameterValueGroup,DefaultParametricCRS,DefaultParametricCS,DefaultParametricDatum,DefaultPassThroughOperation,DefaultPlan,DefaultPlatform,DefaultPlatformPass,DefaultPolarCS,DefaultPortrayalCatalogueReference,DefaultPrimeMeridian,DefaultProcessing,DefaultProcessStep,DefaultProcessStepReport,DefaultProjectedCRS,DefaultQualityMeasure,DefaultQuantitativeAttributeAccuracy,DefaultQuantitativeResult,DefaultRangeDimension,DefaultRangeElementDescription,DefaultRelativeInternalPositionalAccuracy,DefaultReleasability,DefaultRepresentativity,DefaultRequestedDate,DefaultRequirement,DefaultResolution,DefaultResponsibility,DefaultResponsibleParty,DefaultSampleBasedInspection,DefaultSampleDimension,DefaultScope,DefaultScope,DefaultScopeDescription,DefaultSecurityConstraints,DefaultSeries,DefaultServiceIdentification,DefaultSource,DefaultSourceReference,DefaultSpatialTemporalExtent,DefaultSphericalCS,DefaultStandardOrderProcess,DefaultTelephone,DefaultTemporalConsistency,DefaultTemporalCRS,DefaultTemporalDatum,DefaultTemporalExtent,DefaultTemporalValidity,DefaultThematicClassificationCorrectness,DefaultTimeCS,DefaultTopologicalConsistency,DefaultTransformation,DefaultUsability,DefaultUsage,DefaultUserDefinedCS,DefaultVectorSpatialRepresentation,DefaultVerticalCRS,DefaultVerticalCS,DefaultVerticalDatum,DefaultVerticalExtent,EllipsoidToCentricTransform,GeohashReferenceSystem,GridExtent,GridGeometry,InterpolatedGeocentricTransform,InterpolatedMolodenskyTransform,InterpolatedTransform,ISOMetadata,LambertAzimuthalEqualArea,LambertConicConformal,Matrix1,Matrix2,Matrix3,Matrix4,MatrixSIS,Mercator,MilitaryGridReferenceSystem,ModifiableLocationType,ModifiableMetadata,ModifiedAzimuthalEquidistant,Mollweide,MolodenskyTransform,NormalizedProjection,ObliqueMercator,ObliqueStereographic,Orthographic,PassThroughTransform,PolarStereographic,PoleRotation,Polyconic,ReferencingByIdentifiers,RegionOfInterest,SatelliteTracking,Sinusoidal,TransverseMercator,WraparoundTransform,ZonedGridSystem
public interface LenientComparable
Interfaces of classes for which instances can be compared for equality using different levels of strictness.
For example,
MathTransform implementations can be
compared ignoring some properties (remarks, etc.) that are not relevant to the
coordinates calculation.
Conditions for equality
ISOMetadatasubclassesSTRICT– Objects must be of the same class and all attributes must be equal, includingxlinkand others identifiers.BY_CONTRACT– The same attributes than the aboveSTRICTmode must be equal, but the metadata object don't need to be implemented by the same class provided that they implement the same GeoAPI interface.IGNORE_METADATA– Only the attributes defined in the GeoAPI interfaces are compared. The above-cited identifiers andxlinksattributes are ignored.APPROXIMATE– The same attributes than the aboveIGNORE_METADATAmode are compared, but a slight (implementation dependant) difference is tolerated in floating point numbers.
AbstractIdentifiedObjectsubclassesSTRICT– Objects must be of the same class and all attributes must be equal.BY_CONTRACT– The same attributes than the aboveSTRICTmode must be equal, but the referencing object don't need to be implemented by the same class provided that they implement the same GeoAPI interface.IGNORE_METADATA– The identifiers, aliases, scope, domain of validity and remarks are ignored because they have no incidence on the coordinate values to be computed by coordinate operations. All other attributes that are relevant to coordinate calculations, must be equal.APPROXIMATE– The same attributes than the aboveIGNORE_METADATAmode are compared, but a slight (implementation dependant) difference is tolerated in floating point numbers.
AbstractMathTransformsubclasses exceptLinearTransformSTRICT– Objects must be of the same class and all attributes must be equal, including the parameter values.BY_CONTRACT– Synonymous to theSTRICTmode, because there is no GeoAPI interfaces for the various kind of math transforms.IGNORE_METADATA– Objects must be of the same class, but the parameter values can be different if they are different way to formulate the same transform. For example, a "Mercator (2SP)" projection on a sphere with a standard parallel value of 60° produces the same results than a "Mercator (1SP)" projection on the same sphere with a scale factor value of 0.5.APPROXIMATE– The same attributes than the aboveIGNORE_METADATAmode are compared, but a slight (implementation dependant) difference is tolerated in floating point numbers.
MatrixSISandLinearTransformimplementationsSTRICT– Objects must be of the same class, matrixes must have the same size and all matrix elements must be equal.BY_CONTRACT– Matrixes must have the same size and all matrix elements must be equal, but the matrixes are not required to be the same implementation class (anyMatrixis okay).IGNORE_METADATA– Synonymous to theBY_CONTRACTmode, because matrixes don't have metadata.APPROXIMATE– The same attributes than the aboveBY_CONTRACTmode are compared, but a slight (implementation dependant) difference is tolerated in floating point numbers.
- Since:
- 0.3
Defined in the sis-utility module
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Method Summary
Modifier and TypeMethodDescriptionbooleanReturnstrueif this object is strictly equals to the given object.booleanequals(Object other, ComparisonMode mode) Compares this object with the given object for equality.
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Method Details
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equals
Compares this object with the given object for equality. The strictness level is controlled by the second argument, from stricter to more permissive values:Description of comparison modes STRICT:All attributes of the compared objects shall be strictly equal. BY_CONTRACT:Only the attributes published in the interface contract need to be compared. IGNORE_METADATA:Only the attributes relevant to the object functionality are compared. APPROXIMATE:Only the attributes relevant to the object functionality are compared, with some tolerance threshold on numerical values. DEBUG:Special mode for figuring out why two objects expected to be equal are not. Conformance to the
equals(Object)method contractComparisonMode.STRICTis the only mode compliant with theObject.equals(Object)contract. For all other modes m, the comparison is not guaranteed to be symmetric neither transitive:x.equals(y,m)is not guaranteed to be equal toy.equals(x,m). In particular, theBY_CONTRACTmode and all modes below it will typically compare only the properties known tothisinstance, ignoring any properties that may be known only by the other instance.x.equals(y,m)andy.equals(z,m)does not impliesx.equals(z,m). In particular, the use of a comparison threshold for theAPPROXIMATEmode is incompatible with the transitivity contract.
- Parameters:
other- the object to compare tothis.mode- the strictness level of the comparison.- Returns:
trueif both objects are equal according the given comparison mode.- See Also:
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equals
Returnstrueif this object is strictly equals to the given object. This method is usually implemented as below:
Implementers shall ensure that the following conditions hold. Unless thepublic boolean equals(Object other) { return equals(other, ComparisonMode.STRICT); }equalsbehavior is clearly documented in the interface javadoc (as for example in the Java collection framework),ComparisonMode.STRICTis the only reliable mode for this method implementation.A.equals(B)impliesB.equals(A);A.equals(B)andB.equals(C)impliesA.equals(C);A.equals(B)impliesA.hashCode() == B.hashCode();
finalin most SIS implementations for ensuring that subclasses override the aboveequals(Object, ComparisonMode)method instead than this one.
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