org.geotools.filter
Interface Expression

All Superinterfaces:

Expression, ExpressionType

All Known Subinterfaces:

AttributeExpression, BBoxExpression, EnvironmentVariable, FunctionExpression, LiteralExpression, MapScaleDenominator, MathExpression

All Known Implementing Classes:

AddImpl, AreaFunction, AsMultiGeometryFunctionExpression, AttributeExpressionImpl, AttributeExpressionImpl2, BBoxExpressionImpl, ClassificationFunction, ClassifyFunction, Collection_AverageFunction, Collection_BoundsFunction, Collection_CountFunction, Collection_MaxFunction, Collection_MedianFunction, Collection_MinFunction, Collection_SumFunction, Collection_UniqueFunction, ConstantExpression, DivideImpl, EnvFunction, EqualIntervalFunction, FallbackFunction, FilterFunction_abs, FilterFunction_abs_2, FilterFunction_abs_3, FilterFunction_abs_4, FilterFunction_acos, FilterFunction_area, FilterFunction_asin, FilterFunction_atan, FilterFunction_atan2, FilterFunction_between, FilterFunction_boundary, FilterFunction_boundaryDimension, FilterFunction_buffer, FilterFunction_bufferWithSegments, FilterFunction_ceil, FilterFunction_centroid, FilterFunction_contains, FilterFunction_Convert, FilterFunction_convexHull, FilterFunction_cos, FilterFunction_crosses, FilterFunction_dateFormat, FilterFunction_dateParse, FilterFunction_difference, FilterFunction_dimension, FilterFunction_disjoint, FilterFunction_disjoint3D, FilterFunction_distance, FilterFunction_distance3D, FilterFunction_double2bool, FilterFunction_endAngle, FilterFunction_endPoint, FilterFunction_envelope, FilterFunction_equalsExact, FilterFunction_equalsExactTolerance, FilterFunction_equalTo, FilterFunction_exp, FilterFunction_exteriorRing, FilterFunction_floor, FilterFunction_geometryType, FilterFunction_geomFromWKT, FilterFunction_geomLength, FilterFunction_getGeometryN, FilterFunction_getX, FilterFunction_getY, FilterFunction_getZ, FilterFunction_greaterEqualThan, FilterFunction_greaterThan, FilterFunction_IEEEremainder, FilterFunction_if_then_else, FilterFunction_in10, FilterFunction_in2, FilterFunction_in3, FilterFunction_in4, FilterFunction_in5, FilterFunction_in6, FilterFunction_in7, FilterFunction_in8, FilterFunction_in9, FilterFunction_int2bbool, FilterFunction_int2ddouble, FilterFunction_interiorPoint, FilterFunction_interiorRingN, FilterFunction_intersection, FilterFunction_intersects, FilterFunction_intersects3D, FilterFunction_isClosed, FilterFunction_isEmpty, FilterFunction_isLike, FilterFunction_isNull, FilterFunction_isometric, FilterFunction_isRing, FilterFunction_isSimple, FilterFunction_isValid, FilterFunction_isWithinDistance, FilterFunction_isWithinDistance3D, FilterFunction_lessEqualThan, FilterFunction_lessThan, FilterFunction_log, FilterFunction_max, FilterFunction_max_2, FilterFunction_max_3, FilterFunction_max_4, FilterFunction_min, FilterFunction_min_2, FilterFunction_min_3, FilterFunction_min_4, FilterFunction_minimumCircle, FilterFunction_minimumDiameter, FilterFunction_minimumRectangle, FilterFunction_not, FilterFunction_notEqualTo, FilterFunction_numberFormat, FilterFunction_numberFormat2, FilterFunction_numGeometries, FilterFunction_numInteriorRing, FilterFunction_numPoints, FilterFunction_octagonalEnvelope, FilterFunction_offset, FilterFunction_overlaps, FilterFunction_parseBoolean, FilterFunction_parseDouble, FilterFunction_parseInt, FilterFunction_parseLong, FilterFunction_pointN, FilterFunction_pow, FilterFunction_property, FilterFunction_random, FilterFunction_relate, FilterFunction_relatePattern, FilterFunction_rint, FilterFunction_round, FilterFunction_round_2, FilterFunction_roundDouble, FilterFunction_sdonn, FilterFunction_setCRS, FilterFunction_sin, FilterFunction_sqrt, FilterFunction_startAngle, FilterFunction_startPoint, FilterFunction_strCapitalize, FilterFunction_strConcat, FilterFunction_strEndsWith, FilterFunction_strEqualsIgnoreCase, FilterFunction_strIndexOf, FilterFunction_strLastIndexOf, FilterFunction_strLength, FilterFunction_strMatches, FilterFunction_strPosition, FilterFunction_strReplace, FilterFunction_strStartsWith, FilterFunction_strSubstring, FilterFunction_strSubstringStart, FilterFunction_strToLowerCase, FilterFunction_strToUpperCase, FilterFunction_strTrim, FilterFunction_strTrim2, FilterFunction_symDifference, FilterFunction_tan, FilterFunction_toDegrees, FilterFunction_toRadians, FilterFunction_touches, FilterFunction_toWKT, FilterFunction_union, FilterFunction_vertices, FilterFunction_within, FunctionExpressionImpl, IDFunction, IDFunctionExpression, JenksNaturalBreaksFunction, JoinPropertyName, LengthFunction, LiteralExpressionImpl, MapScaleDenominatorImpl, MathExpressionImpl, MaxFunction, MinFunction, MultiplyImpl, NestedAttributeExpression, OverlapBehavior, PaletteFunction, PiFunction, PropertyExistsFunction, QuantileFunction, StandardDeviationFunction, SubtractImpl, UniqueIntervalFunction

Deprecated. use Expression

public interface Expression
extends ExpressionType, Expression

Defines an expression, the units that make up Filters. This filter holds one or more filters together and relates them logically in an internally defined manner.

Author:

Rob Hranac, Vision for New York

Field Summary

Fields inherited from interface ExpressionType

ATTRIBUTE, ATTRIBUTE_DOUBLE, ATTRIBUTE_GEOMETRY, ATTRIBUTE_INTEGER, ATTRIBUTE_STRING, ATTRIBUTE_UNDECLARED, FUNCTION, LITERAL_DOUBLE, LITERAL_GEOMETRY, LITERAL_INTEGER, LITERAL_LONG, LITERAL_STRING, LITERAL_UNDECLARED, MATH_ADD, MATH_DIVIDE, MATH_MULTIPLY, MATH_SUBTRACT

Fields inherited from interface Expression

NIL

Method Summary

void	accept(FilterVisitor visitor) Deprecated. use use Expression.accept(ExpressionVisitor, Object)
Object	evaluate(SimpleFeature feature) Deprecated. Evaluates the expression against an instance of Feature.
short	getType() Deprecated. The enumeration based type system has been replaced by a class based type system.
Object	getValue(SimpleFeature feature) Deprecated. use org.opengis.filter.expression.Expression#evaluate(Feature)

Methods inherited from interface Expression

accept, evaluate, evaluate

Method Detail

getType

short getType()

Deprecated. The enumeration based type system has been replaced by a class based type system.

Gets the type of this expression.

Returns:

Expression type.

evaluate

Object evaluate(SimpleFeature feature)

Deprecated.

Evaluates the expression against an instance of Feature.

Parameters:

feature - The feature being evaluated.

Returns:

The result.

getValue

Object getValue(SimpleFeature feature)

Deprecated. use org.opengis.filter.expression.Expression#evaluate(Feature)

Returns a value for this expression. The feature argument is used if a feature is needed to evaluate the expression, as in the case of an AttributeExpression.

Parameters:

feature - Specified feature to use when returning value. Some expressions, such as LiteralExpressions, may ignore this as it does not affect their return value.

Returns:

Value of the expression, evaluated with the feature object if necessary.

accept

void accept(FilterVisitor visitor)

Deprecated. use use Expression.accept(ExpressionVisitor, Object)

Used by FilterVisitors to perform some action on this filter instance. Typicaly used by Filter decoders, but may also be used by any thing which needs infomration from filter structure. Implementations should always call: visitor.visit(this); It is importatant that this is not left to a parent class unless the parents API is identical.

Parameters:

visitor - The visitor which requires access to this filter, the method must call visitor.visit(this);