Class IntersectsFunction
- java.lang.Object
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- adql.query.operand.function.ADQLFunction
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- adql.query.operand.function.geometry.GeometryFunction
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- adql.query.operand.function.geometry.IntersectsFunction
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- All Implemented Interfaces:
ADQLObject
,ADQLOperand
public class IntersectsFunction extends GeometryFunction
It represents the INTERSECTS function of the ADQL language.
This numeric function determines if two geometry values overlap. This is most commonly used to express a "shape-vs-shape" intersection test.
Example:
INTERSECTS(CIRCLE('ICRS GEOCENTER', 25.4, -20.0, 1), BOX('ICRS GEOCENTER', 20.0, -15.0, 10, 10)) = 1
In this example the function determines whether the circle of one degree radius centered in a position (25.4, -20.0) degrees and defined according to the ICRS coordinate system with GEOCENTER reference position overlaps with a box of ten degrees centered in a position (20.0, -15.0) in degrees and defined according to the same coordinate system.Warning:
- The INTERSECTS function returns 1 (true) if the two arguments overlap and 0 (false) otherwise.
- Since the two argument geometries may be expressed in different coordinate systems, the function is responsible for converting one (or both). If it can not do so, it SHOULD throw an error message, to be defined by the service making use of ADQL.
- Version:
- 1.4 (06/2015)
- Author:
- Grégory Mantelet (CDS;ARI)
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Nested Class Summary
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Nested classes/interfaces inherited from class adql.query.operand.function.geometry.GeometryFunction
GeometryFunction.GeometryValue<F extends GeometryFunction>
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Nested classes/interfaces inherited from class adql.query.operand.function.ADQLFunction
ADQLFunction.ParameterIterator
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Field Summary
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Fields inherited from class adql.query.operand.function.geometry.GeometryFunction
coordSys
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Constructor Summary
Constructors Constructor Description IntersectsFunction(GeometryFunction.GeometryValue<GeometryFunction> param1, GeometryFunction.GeometryValue<GeometryFunction> param2)
Builds an INTERSECTS function.IntersectsFunction(IntersectsFunction toCopy)
Builds an INTERSECTS function by copying the given one.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description ADQLObject
getCopy()
Gets a (deep) copy of this ADQL object.GeometryFunction.GeometryValue<GeometryFunction>
getLeftParam()
java.lang.String
getName()
Gets the name of this object in ADQL.int
getNbParameters()
Gets the number of parameters this function has.ADQLOperand
getParameter(int index)
Gets the index-th parameter.ADQLOperand[]
getParameters()
Gets the list of all parameters of this function.GeometryFunction.GeometryValue<GeometryFunction>
getRightParam()
boolean
isGeometry()
Tell whether this operand is a geometrical region or not.boolean
isNumeric()
Tell whether this operand is numeric or not.boolean
isString()
Tell whether this operand is a string or not.void
setLeftParam(GeometryFunction.GeometryValue<GeometryFunction> leftParam)
ADQLOperand
setParameter(int index, ADQLOperand replacer)
Replaces the index-th parameter by the given one.void
setRightParam(GeometryFunction.GeometryValue<GeometryFunction> rightParam)
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Methods inherited from class adql.query.operand.function.geometry.GeometryFunction
getCoordinateSystem, setCoordinateSystem
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Methods inherited from class adql.query.operand.function.ADQLFunction
adqlIterator, getPosition, paramIterator, setPosition, toADQL
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Constructor Detail
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IntersectsFunction
public IntersectsFunction(GeometryFunction.GeometryValue<GeometryFunction> param1, GeometryFunction.GeometryValue<GeometryFunction> param2) throws java.lang.NullPointerException
Builds an INTERSECTS function.- Parameters:
param1
- The first geometry.param2
- The second geometry.- Throws:
java.lang.NullPointerException
- If there is an error with at least one of the parameters.
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IntersectsFunction
public IntersectsFunction(IntersectsFunction toCopy) throws java.lang.Exception
Builds an INTERSECTS function by copying the given one.- Parameters:
toCopy
- The INTERSECTS function to copy.- Throws:
java.lang.Exception
- If there is an error during the copy.
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Method Detail
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getCopy
public ADQLObject getCopy() throws java.lang.Exception
Description copied from interface:ADQLObject
Gets a (deep) copy of this ADQL object.- Returns:
- The copy of this ADQL object.
- Throws:
java.lang.Exception
- If there is any error during the copy.
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getName
public java.lang.String getName()
Description copied from interface:ADQLObject
Gets the name of this object in ADQL.- Returns:
- The name of this ADQL object.
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isNumeric
public boolean isNumeric()
Description copied from interface:ADQLOperand
Tell whether this operand is numeric or not.- Returns:
- true if this operand is numeric, false otherwise.
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isString
public boolean isString()
Description copied from interface:ADQLOperand
Tell whether this operand is a string or not.- Returns:
- true if this operand is a string, false otherwise.
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isGeometry
public boolean isGeometry()
Description copied from interface:ADQLOperand
Tell whether this operand is a geometrical region or not.- Returns:
- true if this operand is a geometry, false otherwise.
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getLeftParam
public final GeometryFunction.GeometryValue<GeometryFunction> getLeftParam()
- Returns:
- The leftParam.
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setLeftParam
public final void setLeftParam(GeometryFunction.GeometryValue<GeometryFunction> leftParam)
- Parameters:
leftParam
- The leftParam to set.
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getRightParam
public final GeometryFunction.GeometryValue<GeometryFunction> getRightParam()
- Returns:
- The rightParam.
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setRightParam
public final void setRightParam(GeometryFunction.GeometryValue<GeometryFunction> rightParam)
- Parameters:
rightParam
- The rightParam to set.
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getParameters
public ADQLOperand[] getParameters()
Description copied from class:ADQLFunction
Gets the list of all parameters of this function.- Specified by:
getParameters
in classADQLFunction
- Returns:
- Its parameters list.
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getNbParameters
public int getNbParameters()
Description copied from class:ADQLFunction
Gets the number of parameters this function has.- Specified by:
getNbParameters
in classADQLFunction
- Returns:
- Number of parameters.
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getParameter
public ADQLOperand getParameter(int index) throws java.lang.ArrayIndexOutOfBoundsException
Description copied from class:ADQLFunction
Gets the index-th parameter.- Specified by:
getParameter
in classADQLFunction
- Parameters:
index
- Parameter number.- Returns:
- The corresponding parameter.
- Throws:
java.lang.ArrayIndexOutOfBoundsException
- If the index is incorrect (index < 0 || index >= getNbParameters()).
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setParameter
public ADQLOperand setParameter(int index, ADQLOperand replacer) throws java.lang.ArrayIndexOutOfBoundsException, java.lang.NullPointerException, java.lang.Exception
Description copied from class:ADQLFunction
Replaces the index-th parameter by the given one.- Specified by:
setParameter
in classADQLFunction
- Parameters:
index
- Index of the parameter to replace.replacer
- The replacer.- Returns:
- The replaced parameter.
- Throws:
java.lang.ArrayIndexOutOfBoundsException
- If the index is incorrect (index < 0 || index >= getNbParameters()).java.lang.NullPointerException
- If a required parameter must be replaced by a NULL object.java.lang.Exception
- If another error occurs.
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