net.coderazzi.filters.parser

Class Parser

java.lang.Object

net.coderazzi.filters.parser.Parser

All Implemented Interfaces:

IParser

public class Parser
extends Object
implements IParser

Basic implementation of a IParser, supporting only simple operators referring to the content of a single column.
The supporter operators include:

• Comparison operators. The comparison is done on the parsed object, not on the string representation, unless no Format or Comparator is defined for the given type. For example, specifying the text ">= 4" implies, for a column with integer types, that a direct comparison between integers will be performed. These operators are:
  • >=
  • >
  • <
  • <=
  • <>, !: all behave the same
• Basic wildcard operators. These operators work using the string representation of the types (using, when possible, the defined Format instance). Only two wildcard characters are defined: * and ?
  • ~: for example ~ *vadis* will filter in all expressions including the substring vadis
  • !~: negates the previous operator
• Regular expression operator. There is only one such operator: ~~, accepting a java regular expression.

In addition, providing no operator will behave as the operator ~

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	Parser.ComparisonOperand IOperand for comparison operations.
protected static class	Parser.EqualOperand IOperand for equal/unequal operations.
protected static interface	Parser.IOperand Internal interface, to be implemented by all operands.
protected static class	Parser.REOperand Operand for regular expressions.
protected static class	Parser.WildcardOperand Operand for wildcard expressions.

Nested classes/interfaces inherited from interface net.coderazzi.filters.IParser

IParser.InstantFilter

Constructor Summary

Constructors

Constructor and Description
Parser(Format format, Comparator classComparator, Comparator<String> stringComparator, boolean ignoreCase, int modelIndex)

Method Summary

Modifier and Type	Method and Description
String	escape(String expression) IParser interface.
Parser.IOperand	getDefaultOperator(boolean instantMode) Returns the default operator if none is specified by the user
protected String	getInstantAppliedExpression(String expression)
IParser.InstantFilter	parseInstantText(String expression) IParser interface.
RowFilter	parseText(String expression) IParser interface.
String	stripHtml(String expression) IParser interface.

Methods inherited from class java.lang.Object

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

Constructor Detail

Parser

public Parser(Format format,
              Comparator classComparator,
              Comparator<String> stringComparator,
              boolean ignoreCase,
              int modelIndex)

Method Detail

parseText

public RowFilter parseText(String expression)
                    throws ParseException

IParser interface.

Specified by:

parseText in interface IParser

Parameters:

expression - the text to parse

Throws:

ParseException

parseInstantText

public IParser.InstantFilter parseInstantText(String expression)
                                       throws ParseException

IParser interface.

Specified by:

parseInstantText in interface IParser

Parameters:

expression - the text to parse

Returns:

the filter plus the real expression used to create the filter

Throws:

ParseException

getInstantAppliedExpression

protected String getInstantAppliedExpression(String expression)

getDefaultOperator

public Parser.IOperand getDefaultOperator(boolean instantMode)

Returns the default operator if none is specified by the user

Parameters:

instantMode - true if called during instant parsing

Returns:

the default operator if none is specified by the user

stripHtml

public String stripHtml(String expression)

IParser interface.

Specified by:

stripHtml in interface IParser

escape

public String escape(String expression)

IParser interface.

Specified by:

escape in interface IParser