org.shapelogic.filter
Class FilterFactory

java.lang.Object
  org.shapelogic.filter.FilterFactory

public class FilterFactory
extends java.lang.Object

Turns logic expressions into filters. Uses Antlr parser to parse to AST, Abstract Syntax Tree, then traverses the tree to build the filter.

Author:

Sami Badawi

Field Summary

static java.lang.String	AND
static char	BACKSPACE
static java.lang.String	CONSTRAINT
static java.lang.String	DOUBLE_TYPE
static java.lang.String	FILTER_PACKAGE
static java.lang.String	NOT
static java.lang.String	OR
static java.lang.String	STRING_TYPE
static java.lang.String	VARIABLE_TYPE

Constructor Summary

FilterFactory()

Method Summary

static java.lang.String	escapeBackspace(java.lang.String input) Replace escaped characters with the character \\ -> \ \" -> " \' -> '
static <BaseClass,Element> IFilter<BaseClass,Element>	makeFilter(org.antlr.runtime.tree.CommonTree tree)
static <BaseClass,Element> IFilter<BaseClass,Element>	makeFilter(java.lang.String filterName)
static <BaseClass,Element> IFilter<BaseClass,Element>	makeFilter(java.lang.String filterName, java.lang.Object constraint)
static <BaseClass,Element> IFilter<BaseClass,Element>	makeTreeFilter(java.lang.String inputExpression)
static java.lang.Object	parseCronstraintParameterTree(org.antlr.runtime.tree.CommonTree tree)

Methods inherited from class java.lang.Object

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

Field Detail

AND

public static final java.lang.String AND

See Also:

Constant Field Values

OR

public static final java.lang.String OR

See Also:

Constant Field Values

NOT

public static final java.lang.String NOT

See Also:

Constant Field Values

CONSTRAINT

public static final java.lang.String CONSTRAINT

See Also:

Constant Field Values

STRING_TYPE

public static final java.lang.String STRING_TYPE

See Also:

Constant Field Values

DOUBLE_TYPE

public static final java.lang.String DOUBLE_TYPE

See Also:

Constant Field Values

VARIABLE_TYPE

public static final java.lang.String VARIABLE_TYPE

See Also:

Constant Field Values

FILTER_PACKAGE

public static final java.lang.String FILTER_PACKAGE

See Also:

Constant Field Values

BACKSPACE

public static final char BACKSPACE

See Also:

Constant Field Values

Constructor Detail

FilterFactory

public FilterFactory()

Method Detail

makeFilter

public static <BaseClass,Element> IFilter<BaseClass,Element> makeFilter(java.lang.String filterName)

makeFilter

public static <BaseClass,Element> IFilter<BaseClass,Element> makeFilter(java.lang.String filterName,
                                                                        java.lang.Object constraint)

makeFilter

public static <BaseClass,Element> IFilter<BaseClass,Element> makeFilter(org.antlr.runtime.tree.CommonTree tree)

makeTreeFilter

public static <BaseClass,Element> IFilter<BaseClass,Element> makeTreeFilter(java.lang.String inputExpression)

parseCronstraintParameterTree

public static java.lang.Object parseCronstraintParameterTree(org.antlr.runtime.tree.CommonTree tree)

escapeBackspace

public static java.lang.String escapeBackspace(java.lang.String input)

Replace escaped characters with the character \\ -> \ \" -> " \' -> '