org.springframework.ldap.filter
Class CompareFilter

java.lang.Object
  org.springframework.ldap.filter.AbstractFilter
      org.springframework.ldap.filter.CompareFilter

All Implemented Interfaces:

Filter

Direct Known Subclasses:

EqualsFilter, GreaterThanOrEqualsFilter, LessThanOrEqualsFilter

public abstract class CompareFilter
extends AbstractFilter

Abstract superclass for filters that compare values.

Author:

Mattias Hellborg Arthursson

Constructor Summary

CompareFilter(String attribute, int value)
Convenience constructor for int values.

CompareFilter(String attribute, String value)

Method Summary

StringBuffer	encode(StringBuffer buff) Encodes the filter to a StringBuffer.
protected String	encodeValue(String value) Override to perform special encoding in subclass.
boolean	equals(Object o) Compares key and value before encoding.
protected abstract String	getCompareString() Implement this method in subclass to return a String representing the operator.
int	hashCode() Calculate the hash code for the attribute and the value.

Methods inherited from class org.springframework.ldap.filter.AbstractFilter

encode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

CompareFilter

public CompareFilter(String attribute,
                     String value)

CompareFilter

public CompareFilter(String attribute,
                     int value)

Convenience constructor for int values.

Parameters:

attribute - Name of attribute in filter.

value - The value of the attribute in the filter.

Method Detail

encodeValue

protected String encodeValue(String value)

Override to perform special encoding in subclass.

Parameters:

value - the value to encode.

Returns:

properly escaped value.

encode

public StringBuffer encode(StringBuffer buff)

Description copied from interface: Filter

Encodes the filter to a StringBuffer.

Specified by:

encode in interface Filter

Specified by:

encode in class AbstractFilter

Parameters:

buff - The StringBuffer to encode the filter to

Returns:

The same StringBuffer as was given

equals

public boolean equals(Object o)

Compares key and value before encoding.

Specified by:

equals in interface Filter

Overrides:

equals in class Object

Returns:

true if the objects are equal.

See Also:

Filter.equals(java.lang.Object)

hashCode

public int hashCode()

Calculate the hash code for the attribute and the value.

Specified by:

hashCode in interface Filter

Overrides:

hashCode in class Object

Returns:

the hash code according to the contract in Object.hashCode()

See Also:

Filter.hashCode()

getCompareString

protected abstract String getCompareString()

Implement this method in subclass to return a String representing the operator. The EqualsFilter.getCompareString() would for example return an equals sign, "=".

Returns:

the String to use as operator in the comparison for the specific subclass.