org.da.sparqlhelper.sparql.model.expressions

Class FunctionExpression

java.lang.Object

org.da.sparqlhelper.sparql.model.expressions.AbstractExpression

org.da.sparqlhelper.sparql.model.expressions.FunctionExpression

All Implemented Interfaces:

Expression, ExpressionOperators, FunctionTypes

public class FunctionExpression
extends AbstractExpression
implements FunctionTypes

Represent a function expression, appearing for example in a BIND, FILTER, or COALESCE construct.

Field Summary

Fields inherited from class org.da.sparqlhelper.sparql.model.expressions.AbstractExpression

operator

Fields inherited from interface org.da.sparqlhelper.sparql.model.expressions.FunctionTypes

FUNCTION_ABS, FUNCTION_ACOS, FUNCTION_ASIN, FUNCTION_ATAN, FUNCTION_ATAN2, FUNCTION_AVG, FUNCTION_BOUND, FUNCTION_CEIL, FUNCTION_COALESCE, FUNCTION_CONCAT, FUNCTION_CONTAINS, FUNCTION_COS, FUNCTION_COUNT, FUNCTION_CUSTOM, FUNCTION_DATATYPE, FUNCTION_DAY, FUNCTION_EXISTS, FUNCTION_EXP, FUNCTION_EXP10, FUNCTION_FLOOR, FUNCTION_HOURS, FUNCTION_IF, FUNCTION_IN, FUNCTION_IRI, FUNCTION_IS_BLANK, FUNCTION_ISIRI, FUNCTION_ISLITERAL, FUNCTION_ISNUMERIC, FUNCTION_ISURI, FUNCTION_LCASE, FUNCTION_LOG, FUNCTION_LOG10, FUNCTION_MAX, FUNCTION_MIN, FUNCTION_MINUTES, FUNCTION_MONTH, FUNCTION_NOT_EXISTS, FUNCTION_NOTIN, FUNCTION_NOW, FUNCTION_POW, FUNCTION_REGEX, FUNCTION_REPLACE, FUNCTION_ROUND, FUNCTION_SAMETERM, FUNCTION_SECONDS, FUNCTION_SIN, FUNCTION_SQRT, FUNCTION_STR, FUNCTION_STRAFTER, FUNCTION_STRBEFORE, FUNCTION_STRENDS, FUNCTION_STRLEN, FUNCTION_STRSTARTS, FUNCTION_SUBSTR, FUNCTION_SUM, FUNCTION_TAN, FUNCTION_TIMEZONE, FUNCTION_TZ, FUNCTION_UCASE, FUNCTION_YEAR

Fields inherited from interface org.da.sparqlhelper.sparql.model.expressions.ExpressionOperators

AND, DEFAULT, DIVIDE, MINUS, MULTIPLY, NOT, OR, PLUS

Constructor Summary

Constructors

Constructor and Description
FunctionExpression(java.util.List<Expression> arguments, PrefixedName function) Constructor.
FunctionExpression(java.util.List<Expression> arguments, short fn) Constructor.
FunctionExpression(java.util.List<Expression> arguments, java.lang.String function) Constructor.
FunctionExpression(java.util.List<Expression> arguments, java.lang.String function, java.lang.String prefix) Constructor.
FunctionExpression(PrefixedName function) Constructor.
FunctionExpression(PrefixedName function, Expression... arguments) Constructor.
FunctionExpression(short fn) Constructor.
FunctionExpression(short fn, Expression... arguments) Constructor.
FunctionExpression(java.lang.String function) Constructor.
FunctionExpression(java.lang.String function, Expression... arguments) Constructor.
FunctionExpression(java.lang.String function, java.lang.String prefix) Constructor.
FunctionExpression(java.lang.String function, java.lang.String prefix, Expression... arguments) Constructor.

Method Summary

Modifier and Type	Method and Description
void	addArgument(Expression expr) Add an argument.
void	appendContent(java.lang.String prefix, java.lang.StringBuilder buf) Append the expression content to a buffer.
boolean	checkValidity(ISparqlRequestGroup request) Return true if the expression is valid.
java.util.List<Expression>	getArguments() Return the list of arguments.
short	getFunction() Return the function type.
static short	getFunction(java.lang.String function) Return the function type corresponding to a String.
java.lang.String	getFunctionAsString() Return the function name as a String.
java.lang.String	getFunctionName() Return the function name.
java.util.Set<java.lang.String>	getOutputVariables() Return the variables which are in output of the expression.
java.util.Set<java.lang.String>	getVariables() Return the variables used in the expression.
boolean	isSimpleExpression() Return true.
void	setFunction(java.lang.String function) Set the function name.

Methods inherited from class org.da.sparqlhelper.sparql.model.expressions.AbstractExpression

getOperator, setOperator, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.da.sparqlhelper.sparql.model.expressions.Expression

create, getContent, getOperatorAsString, getOperatorAsString

Constructor Detail

FunctionExpression

public FunctionExpression(short fn)

Constructor.

Parameters:

fn - the function type

See Also:

FunctionTypes

FunctionExpression

public FunctionExpression(java.util.List<Expression> arguments,
                          short fn)

Constructor.

Parameters:

arguments - the function arguments

fn - the function type

See Also:

FunctionTypes

FunctionExpression

public FunctionExpression(short fn,
                          Expression... arguments)

Constructor.

Parameters:

fn - the function type

arguments - the function arguments

See Also:

FunctionTypes

FunctionExpression

public FunctionExpression(java.util.List<Expression> arguments,
                          java.lang.String function)

Constructor.

Parameters:

arguments - the function arguments

function - the function name

FunctionExpression

public FunctionExpression(java.lang.String function,
                          Expression... arguments)

Constructor.

Parameters:

function - the function name

arguments - the function arguments

FunctionExpression

public FunctionExpression(java.util.List<Expression> arguments,
                          java.lang.String function,
                          java.lang.String prefix)

Constructor.

Parameters:

arguments - the function arguments

function - the function name

prefix - the function prefix

FunctionExpression

public FunctionExpression(java.util.List<Expression> arguments,
                          PrefixedName function)

Constructor.

Parameters:

arguments - the function arguments

function - the function name and prefix

FunctionExpression

public FunctionExpression(java.lang.String function,
                          java.lang.String prefix,
                          Expression... arguments)

Constructor.

Parameters:

function - the function name

prefix - the function prefix

arguments - the function arguments

FunctionExpression

public FunctionExpression(PrefixedName function,
                          Expression... arguments)

Constructor.

Parameters:

function - the function name and prefix

arguments - the function arguments

FunctionExpression

public FunctionExpression(java.lang.String function)

Constructor.

Parameters:

function - the function name

FunctionExpression

public FunctionExpression(java.lang.String function,
                          java.lang.String prefix)

Constructor.

Parameters:

function - the function name

prefix - the function prefix

FunctionExpression

public FunctionExpression(PrefixedName function)

Constructor.

Parameters:

function - the function name and prefix

Method Detail

setFunction

public void setFunction(java.lang.String function)

Set the function name.

Parameters:

function - the function name

addArgument

public void addArgument(Expression expr)

Add an argument.

Parameters:

expr - the argument

getArguments

public java.util.List<Expression> getArguments()

Return the list of arguments.

Returns:

the list of arguments

getOutputVariables

public java.util.Set<java.lang.String> getOutputVariables()

Return the variables which are in output of the expression.

Specified by:

getOutputVariables in interface Expression

Returns:

the variables

getVariables

public java.util.Set<java.lang.String> getVariables()

Return the variables used in the expression.

Specified by:

getVariables in interface Expression

Returns:

the variables

getFunction

public short getFunction()

Return the function type.

Returns:

the function type

getFunctionName

public java.lang.String getFunctionName()

Return the function name.

Returns:

the function name

getFunction

public static short getFunction(java.lang.String function)

Return the function type corresponding to a String.

Parameters:

function - the function name

Returns:

the function type

See Also:

FunctionTypes

getFunctionAsString

public java.lang.String getFunctionAsString()

Return the function name as a String.

Returns:

the function name as a String

isSimpleExpression

public boolean isSimpleExpression()

Return true.

Specified by:

isSimpleExpression in interface Expression

Returns:

true

checkValidity

public boolean checkValidity(ISparqlRequestGroup request)

Return true if the expression is valid.

Specified by:

checkValidity in interface Expression

Parameters:

request - the request

Returns:

true if the expression is valid

appendContent

public void appendContent(java.lang.String prefix,
                          java.lang.StringBuilder buf)

Append the expression content to a buffer.

Specified by:

appendContent in interface Expression

Parameters:

prefix - the prefix

buf - the buffer