@Beta public final class CacheBuilderSpec extends Object
CacheBuilderSpec supports parsing configuration off of a string, which
makes it especially useful for command-line configuration of a
The string syntax is a series of comma-separated keys or key-value pairs,
each corresponding to a
The set of supported keys will grow as
CacheBuilder evolves, but existing keys
will never be removed.
Durations are represented by an integer, followed by one of "d", "h", "m", or "s", representing days, hours, minutes, or seconds respectively. (There is currently no syntax to request expiration in milliseconds, microseconds, or nanoseconds.)
Whitespace before and after commas and equal signs is ignored. Keys may not be repeated; it is also illegal to use the following pairs of keys in a single value:
CacheBuilderSpec does not support configuring
with non-value parameters. These must be configured in code.
|Modifier and Type||Method and Description|
Returns a CacheBuilderSpec that will prevent caching.
Indicates whether some other object is "equal to" this one.
Returns a hash code value for the object.
Creates a CacheBuilderSpec from a string.
Returns a string that can be used to parse an equivalent
Returns a string representation for this CacheBuilderSpec instance.
public static CacheBuilderSpec parse(String cacheBuilderSpecification)
cacheBuilderSpecification- the string form
public static CacheBuilderSpec disableCaching()
public String toParsableString()
CacheBuilderSpec. The order and form of this representation is not guaranteed, except that reparsing its output will produce a
CacheBuilderSpecequal to this instance.
public int hashCode()
The general contract of
hashCodemethod must consistently return the same integer, provided no information used in
equalscomparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
equals(Object)method, then calling the
hashCodemethod on each of the two objects must produce the same integer result.
Object.equals(java.lang.Object)method, then calling the
hashCodemethod on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by
Object does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
JavaTM programming language.)
equals method implements an equivalence relation
on non-null object references:
trueif and only if
y, multiple invocations of
trueor consistently return
false, provided no information used in
equalscomparisons on the objects is modified.
equals method for class
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values
y, this method returns
true if and only
y refer to the same object
x == y has the value
Note that it is generally necessary to override the
method whenever this method is overridden, so as to maintain the
general contract for the
hashCode method, which states
that equal objects must have equal hash codes.
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