Package org.apache.felix.utils.resource

Class SimpleFilter

java.lang.Object

org.apache.felix.utils.resource.SimpleFilter

public class SimpleFilter
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final int	AND
static final int	APPROX
private static final ConcurrentHashMap<String,String>	COMMON_STRINGS	Strings which are commonly found in filter specification.
static final int	EQ
static final int	GTE
static final int	LTE
static final int	MATCH_ALL
static final SimpleFilter	MATCH_ALL_FILTER
private final String	name
static final int	NOT
private final int	op
static final int	OR
static final int	PRESENT
static final int	SUBSTRING
private final Object	value

Constructor Summary

Constructors

Constructor	Description
SimpleFilter(String name, Object value, int op)

Method Summary

Modifier and Type	Method	Description
static boolean	compareSubstring(List<String> pieces, String s)
static SimpleFilter	convert(Map<String,Object> attrs)	Converts a attribute map to a filter.
String	getName()
int	getOperation()
Object	getValue()
static SimpleFilter	parse(String filter)
static List<String>	parseSubstring(String value)
private static String	reuseCommonString(String str)
private static int	skipWhitespace(String s, int startIdx)
private static SimpleFilter	subfilter(String filter, int startIdx, int endIdx)
private static String	toDecodedString(String s, int startIdx, int endIdx)
private static void	toEncodedString(StringBuilder sb, Object o)
String	toString()
private void	toString(StringBuilder sb)
private static void	toString(StringBuilder sb, List<?> list)
static void	unparseSubstring(StringBuilder sb, List<?> pieces)

Methods inherited from class java.lang.Object

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

Field Details

MATCH_ALL

public static final int MATCH_ALL

See Also:

• Constant Field Values

AND

public static final int AND

See Also:

• Constant Field Values

OR

public static final int OR

See Also:

• Constant Field Values

NOT

public static final int NOT

See Also:

• Constant Field Values

EQ

public static final int EQ

See Also:

• Constant Field Values

LTE

public static final int LTE

See Also:

• Constant Field Values

GTE

public static final int GTE

See Also:

• Constant Field Values

SUBSTRING

public static final int SUBSTRING

See Also:

• Constant Field Values

PRESENT

public static final int PRESENT

See Also:

• Constant Field Values

APPROX

public static final int APPROX

See Also:

• Constant Field Values

COMMON_STRINGS

private static final ConcurrentHashMap<String,String> COMMON_STRINGS

Strings which are commonly found in filter specification. We use this map as an interner.

MATCH_ALL_FILTER

public static final SimpleFilter MATCH_ALL_FILTER

name

private final String name

value

private final Object value

op

private final int op

Constructor Details

SimpleFilter

SimpleFilter(String name,
 Object value,
 int op)

Method Details

getName

public String getName()

getValue

public Object getValue()

getOperation

public int getOperation()

toString

public String toString()

Overrides:

toString in class Object

toString

private void toString(StringBuilder sb)

reuseCommonString

private static String reuseCommonString(String str)

toString

private static void toString(StringBuilder sb,
 List<?> list)

toDecodedString

private static String toDecodedString(String s,
 int startIdx,
 int endIdx)

toEncodedString

private static void toEncodedString(StringBuilder sb,
 Object o)

parse

public static SimpleFilter parse(String filter)

subfilter

private static SimpleFilter subfilter(String filter,
 int startIdx,
 int endIdx)

parseSubstring

public static List<String> parseSubstring(String value)

unparseSubstring

public static void unparseSubstring(StringBuilder sb,
 List<?> pieces)

compareSubstring

public static boolean compareSubstring(List<String> pieces,
 String s)

skipWhitespace

private static int skipWhitespace(String s,
 int startIdx)

convert

public static SimpleFilter convert(Map<String,Object> attrs)

Converts a attribute map to a filter. The filter is created by iterating over the map's entry set. If ordering of attributes is important (e.g., for hitting attribute indices), then the map's entry set should iterate in the desired order. Equality testing is assumed for all attribute types other than version ranges, which are handled appropriated. If the attribute map is empty, then a filter that matches anything is returned.

Parameters:

attrs - Map of attributes to convert to a filter.

Returns:

A filter corresponding to the attributes.