Package adql.query.operand
Class NegativeOperand
java.lang.Object
adql.query.operand.NegativeOperand
- All Implemented Interfaces:
ADQLObject
,ADQLOperand
Lets putting a minus sign in front of any numeric operand.
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Field Summary
Fields -
Constructor Summary
ConstructorsConstructorDescriptionNegativeOperand
(ADQLOperand operand) Builds an operand which will negativate the given operand. -
Method Summary
Modifier and TypeMethodDescriptionGets an iterator on the intern ADQL objects.getCopy()
Gets a (deep) copy of this ADQL object.final LanguageFeature
Get the description of this ADQL's Language Feature.getName()
Gets the name of this object in ADQL.final ADQLOperand
Gets the operand on which the minus sign is applied.final TextPosition
Gets the position of this object/token in the ADQL query.final boolean
Always returnsfalse
.final boolean
Always returnstrue
.final boolean
isString()
Always returnsfalse
.final void
setPosition
(TextPosition position) Sets the position at which thisNegativeOperand
has been found in the original ADQL query string.toADQL()
Gets the ADQL expression of this object.
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Field Details
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FEATURE
Description of this ADQL Feature.- Since:
- 2.0
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Constructor Details
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NegativeOperand
public NegativeOperand(ADQLOperand operand) throws NullPointerException, UnsupportedOperationException Builds an operand which will negativate the given operand.Important: The given operand must be numeric (
ADQLOperand.isNumeric()
must returntrue
)!- Parameters:
operand
- The operand to negativate.- Throws:
NullPointerException
- If the given operand is NULL.UnsupportedOperationException
- If the given operand is not numeric (ifADQLOperand.isNumeric()
does not returntrue
).
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Method Details
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getFeatureDescription
Description copied from interface:ADQLObject
Get the description of this ADQL's Language Feature.Note: Getting this description is generally only useful when discovery optional features so that determining if they are allowed to be used in ADQL queries.
- Specified by:
getFeatureDescription
in interfaceADQLObject
- Returns:
- Description of this ADQL object as an ADQL's feature.
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getOperand
Gets the operand on which the minus sign is applied.- Returns:
- The negativated operand.
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isNumeric
public final boolean isNumeric()Always returnstrue
.- Specified by:
isNumeric
in interfaceADQLOperand
- Returns:
- true if this operand is numeric, false otherwise.
- See Also:
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isString
public final boolean isString()Always returnsfalse
.- Specified by:
isString
in interfaceADQLOperand
- Returns:
- true if this operand is a string, false otherwise.
- See Also:
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getPosition
Description copied from interface:ADQLObject
Gets the position of this object/token in the ADQL query.By default, no position should be set.
- Specified by:
getPosition
in interfaceADQLObject
- Returns:
- Position of this ADQL item in the ADQL query, or NULL if not written originally in the query (for example, if added afterwards).
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setPosition
Sets the position at which thisNegativeOperand
has been found in the original ADQL query string.- Parameters:
position
- Position of thisNegativeOperand
.- Since:
- 1.4
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isGeometry
public final boolean isGeometry()Always returnsfalse
.- Specified by:
isGeometry
in interfaceADQLOperand
- Returns:
- true if this operand is a geometry, false otherwise.
- See Also:
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getCopy
Description copied from interface:ADQLObject
Gets a (deep) copy of this ADQL object.- Specified by:
getCopy
in interfaceADQLObject
- Returns:
- The copy of this ADQL object.
- Throws:
Exception
- If there is any error during the copy.
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getName
Description copied from interface:ADQLObject
Gets the name of this object in ADQL.- Specified by:
getName
in interfaceADQLObject
- Returns:
- The name of this ADQL object.
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adqlIterator
Description copied from interface:ADQLObject
Gets an iterator on the intern ADQL objects.Note: The returned iterator is particularly used by a
ISearchHandler
extension to browse a whole ADQL tree.- Specified by:
adqlIterator
in interfaceADQLObject
- Returns:
- An ADQL objects iterator.
- See Also:
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toADQL
Description copied from interface:ADQLObject
Gets the ADQL expression of this object.- Specified by:
toADQL
in interfaceADQLObject
- Returns:
- The corresponding ADQL expression.
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