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java.lang.Objectorg.geotools.filter.DefaultExpression
org.geotools.filter.FunctionExpressionImpl
Abstract class for a function expression implementation
Field Summary |
Fields inherited from class org.geotools.filter.DefaultExpression |
expressionType, permissiveConstruction |
Fields inherited from interface org.geotools.filter.ExpressionType |
ATTRIBUTE, ATTRIBUTE_DOUBLE, ATTRIBUTE_GEOMETRY, ATTRIBUTE_INTEGER, ATTRIBUTE_STRING, ATTRIBUTE_UNDECLARED, FUNCTION, LITERAL_DOUBLE, LITERAL_GEOMETRY, LITERAL_INTEGER, LITERAL_STRING, MATH_ADD, MATH_DIVIDE, MATH_MULTIPLY, MATH_SUBTRACT |
Constructor Summary | |
protected |
FunctionExpressionImpl()
Creates a new instance of FunctionExpression |
Method Summary | |
void |
accept(FilterVisitor visitor)
Used by FilterVisitors to perform some action on this filter instance. |
abstract int |
getArgCount()
Gets the number of arguments that are set. |
java.util.Map |
getImplementationHints()
Returns the implementation hints. |
abstract java.lang.String |
getName()
Gets the name of this function. |
short |
getType()
Gets the type of this expression. |
abstract void |
setArgs(Expression[] args)
Sets the arguments to be evaluated by this function. |
Methods inherited from class org.geotools.filter.DefaultExpression |
getValue, isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.geotools.filter.FunctionExpression |
getArgs |
Methods inherited from interface org.geotools.filter.Expression |
getValue |
Constructor Detail |
protected FunctionExpressionImpl()
Method Detail |
public short getType()
getType
in interface FunctionExpression
getType
in class DefaultExpression
public abstract java.lang.String getName()
getName
in interface FunctionExpression
public abstract void setArgs(Expression[] args)
setArgs
in interface FunctionExpression
args
- an array of expressions to be evaluated.public abstract int getArgCount()
getArgCount
in interface FunctionExpression
public void accept(FilterVisitor visitor)
accept
in interface Expression
visitor
- The visitor which requires access to this filter, the
method must call visitor.visit(this);public java.util.Map getImplementationHints()
getImplementationHints
in interface Factory
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