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javax.management
Class Query
java.lang.Object
javax.management.Query
-
public class Query
- extends Object
Constructs query object constraints. The static methods provided return query expressions that may be used in listing and enumerating MBeans. Individual constraint construction methods allow only appropriate types as arguments. Composition of calls can construct arbitrary nestings of constraints, as the following example illustrates:
QueryExp exp = Query.and(Query.gt(Query.attr("age"),Query.value(5)),
Query.match(Query.attr("name"),
Query.value("Smith")));
-
Since:
-
1.5
Constructor Summary
|
Query
()
Basic constructor. |
Method Summary
|
static
QueryExp
|
and
(
QueryExp
q1,
QueryExp
q2)
Returns a query expression that is the conjunction of two other query expressions. |
static
QueryExp
|
anySubString
(
AttributeValueExp
a,
StringValueExp
s)
Returns a query expression that represents a matching constraint on a string argument. |
static
AttributeValueExp
|
attr
(
String
name)
Returns a new attribute expression. |
static
AttributeValueExp
|
attr
(
String
className,
String
name)
Returns a new qualified attribute expression. |
static
QueryExp
|
between
(
ValueExp
v1,
ValueExp
v2,
ValueExp
v3)
Returns a query expression that represents the constraint that one value is between two other values. |
static
AttributeValueExp
|
classattr
()
Returns a new class attribute expression which can be used in any Query call that expects a ValueExp. |
static
ValueExp
|
div
(
ValueExp
value1,
ValueExp
value2)
Returns a binary expression representing the quotient of two numeric values. |
static
QueryExp
|
eq
(
ValueExp
v1,
ValueExp
v2)
Returns a query expression that represents an equality constraint on two values. |
static
QueryExp
|
finalSubString
(
AttributeValueExp
a,
StringValueExp
s)
Returns a query expression that represents a matching constraint on a string argument. |
static
QueryExp
|
geq
(
ValueExp
v1,
ValueExp
v2)
Returns a query expression that represents a "greater than or equal to" constraint on two values. |
static
QueryExp
|
gt
(
ValueExp
v1,
ValueExp
v2)
Returns a query expression that represents a "greater than" constraint on two values. |
static
QueryExp
|
in
(
ValueExp
val,
ValueExp
[] valueList)
Returns an expression constraining a value to be one of an explicit list. |
static
QueryExp
|
initialSubString
(
AttributeValueExp
a,
StringValueExp
s)
Returns a query expression that represents a matching constraint on a string argument. |
static
QueryExp
|
isInstanceOf
isInstanceOf
(
StringValueExp
String
Returns a query expression that represents an inheritance constraint on an MBean class. |
static
QueryExp
|
leq
(
ValueExp
v1,
ValueExp
v2)
Returns a query expression that represents a "less than or equal to" constraint on two values. |
static
QueryExp
|
lt
(
ValueExp
v1,
ValueExp
v2)
Returns a query expression that represents a "less than" constraint on two values. |
static
QueryExp
|
match
(
AttributeValueExp
a,
StringValueExp
s)
Returns a query expression that represents a matching constraint on a string argument. |
static
ValueExp
|
minus
(
ValueExp
value1,
ValueExp
value2)
Returns a binary expression representing the difference between two numeric values. |
static
QueryExp
|
not
(
QueryExp
queryExp)
Returns a constraint that is the negation of its argument. |
static
QueryExp
|
or
(
QueryExp
q1,
QueryExp
q2)
Returns a query expression that is the disjunction of two other query expressions. |
static
ValueExp
|
plus
(
ValueExp
value1,
ValueExp
value2)
Returns a binary expression representing the sum of two numeric values, or the concatenation of two string values. |
static
ValueExp
|
times
(
ValueExp
value1,
ValueExp
value2)
Returns a binary expression representing the product of two numeric values. |
static
ValueExp
|
value
(boolean val)
Returns a boolean value expression that can be used in any Query call that expects a ValueExp. |
static
ValueExp
|
value
(double val)
Returns a numeric value expression that can be used in any Query call that expects a ValueExp. |
static
ValueExp
|
value
(float val)
Returns a numeric value expression that can be used in any Query call that expects a ValueExp. |
static
ValueExp
|
value
(int val)
Returns a numeric value expression that can be used in any Query call that expects a ValueExp. |
static
ValueExp
|
value
(long val)
Returns a numeric value expression that can be used in any Query call that expects a ValueExp. |
static
ValueExp
|
value
(
Number
val)
Returns a numeric value expression that can be used in any Query call that expects a ValueExp. |
static
StringValueExp
|
value
(
String
val)
Returns a new string expression. |
Methods inherited from class java.lang.
Object
|
clone
,
equals
,
finalize
,
getClass
,
hashCode
,
notify
,
notifyAll
,
toString
,
wait
,
wait
,
wait
|
GT
public static final int GT
-
A code representing the
gt(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
LT
public static final int LT
-
A code representing the
lt(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
GE
public static final int GE
-
A code representing the
geq(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
LE
public static final int LE
-
A code representing the
leq(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
EQ
public static final int EQ
-
A code representing the
eq(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
PLUS
public static final int PLUS
-
A code representing the
plus(javax.management.ValueExp, javax.management.ValueExp)
expression. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
MINUS
public static final int MINUS
-
A code representing the
minus(javax.management.ValueExp, javax.management.ValueExp)
expression. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
TIMES
public static final int TIMES
-
A code representing the
times(javax.management.ValueExp, javax.management.ValueExp)
expression. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
DIV
public static final int DIV
-
A code representing the
div(javax.management.ValueExp, javax.management.ValueExp)
expression. This is chiefly of interest for the serialized form of queries.
-
See Also:
-
Constant Field Values
Query
public Query()
-
Basic constructor.
and
public static QueryExp and(QueryExp q1,
QueryExp q2)
-
Returns a query expression that is the conjunction of two other query expressions.
-
-
Parameters:
-
q1 - A query expression.
-
q2 - Another query expression.
-
Returns:
-
The conjunction of the two arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.AndQueryExp
.
or
public static QueryExp or(QueryExp q1,
QueryExp q2)
-
Returns a query expression that is the disjunction of two other query expressions.
-
-
Parameters:
-
q1 - A query expression.
-
q2 - Another query expression.
-
Returns:
-
The disjunction of the two arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.OrQueryExp
.
gt
public static QueryExp gt(ValueExp v1,
ValueExp v2)
-
Returns a query expression that represents a "greater than" constraint on two values.
-
-
Parameters:
-
v1 - A value expression.
-
v2 - Another value expression.
-
Returns:
-
A "greater than" constraint on the arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryRelQueryExp
with a relOp equal to
GT
.
geq
public static QueryExp geq(ValueExp v1,
ValueExp v2)
-
Returns a query expression that represents a "greater than or equal to" constraint on two values.
-
-
Parameters:
-
v1 - A value expression.
-
v2 - Another value expression.
-
Returns:
-
A "greater than or equal to" constraint on the arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryRelQueryExp
with a relOp equal to
GE
.
leq
public static QueryExp leq(ValueExp v1,
ValueExp v2)
-
Returns a query expression that represents a "less than or equal to" constraint on two values.
-
-
Parameters:
-
v1 - A value expression.
-
v2 - Another value expression.
-
Returns:
-
A "less than or equal to" constraint on the arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryRelQueryExp
with a relOp equal to
LE
.
lt
public static QueryExp lt(ValueExp v1,
ValueExp v2)
-
Returns a query expression that represents a "less than" constraint on two values.
-
-
Parameters:
-
v1 - A value expression.
-
v2 - Another value expression.
-
Returns:
-
A "less than" constraint on the arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryRelQueryExp
with a relOp equal to
LT
.
eq
public static QueryExp eq(ValueExp v1,
ValueExp v2)
-
Returns a query expression that represents an equality constraint on two values.
-
-
Parameters:
-
v1 - A value expression.
-
v2 - Another value expression.
-
Returns:
-
A "equal to" constraint on the arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryRelQueryExp
with a relOp equal to
EQ
.
between
public static QueryExp between(ValueExp v1,
ValueExp v2,
ValueExp v3)
-
Returns a query expression that represents the constraint that one value is between two other values.
-
-
Parameters:
-
v1 - A value expression that is "between" v2 and v3.
-
v2 - Value expression that represents a boundary of the constraint.
-
v3 - Value expression that represents a boundary of the constraint.
-
Returns:
-
The constraint that v1 lies between v2 and v3.
The returned object will be serialized as an instance of the non-public class
javax.management.BetweenQueryExp
.
match
public static QueryExp match(AttributeValueExp a,
StringValueExp s)
-
Returns a query expression that represents a matching constraint on a string argument. The matching syntax is consistent with file globbing: supports "?", "*", "[", each of which may be escaped with "\"; character classes may use "!" for negation and "-" for range. (* for any character sequence, ? for a single arbitrary character, [...] for a character sequence). For example: a*b?c would match a string starting with the character a, followed by any number of characters, followed by a b, any single character, and a c.
-
-
Parameters:
-
a - An attribute expression
-
s - A string value expression representing a matching constraint
-
Returns:
-
A query expression that represents the matching constraint on the string argument.
The returned object will be serialized as an instance of the non-public class
javax.management.MatchQueryExp
.
attr
public static AttributeValueExp attr(String name)
-
Returns a new attribute expression.
Evaluating this expression for a given objectName includes performing
MBeanServer.getAttribute(objectName, name)
.
-
-
Parameters:
-
name - The name of the attribute.
-
Returns:
-
An attribute expression for the attribute named name.
attr
public static AttributeValueExp attr(String className,
String name)
-
Returns a new qualified attribute expression.
Evaluating this expression for a given objectName includes performing
MBeanServer.getObjectInstance(objectName)
and
MBeanServer.getAttribute(objectName, name)
.
-
-
Parameters:
-
className - The name of the class possessing the attribute.
-
name - The name of the attribute.
-
Returns:
-
An attribute expression for the attribute named name.
The returned object will be serialized as an instance of the non-public class
javax.management.QualifiedAttributeValueExp
.
classattr
public static AttributeValueExp classattr()
-
Returns a new class attribute expression which can be used in any Query call that expects a ValueExp.
Evaluating this expression for a given objectName includes performing
MBeanServer.getObjectInstance(objectName)
.
-
-
Returns:
-
A class attribute expression.
The returned object will be serialized as an instance of the non-public class
javax.management.ClassAttributeValueExp
.
not
public static QueryExp not(QueryExp queryExp)
-
Returns a constraint that is the negation of its argument.
-
-
Parameters:
-
queryExp - The constraint to negate.
-
Returns:
-
A negated constraint.
The returned object will be serialized as an instance of the non-public class
javax.management.NotQueryExp
.
in
public static QueryExp in(ValueExp val,
ValueExp[] valueList)
-
Returns an expression constraining a value to be one of an explicit list.
-
-
Parameters:
-
val - A value to be constrained.
-
valueList - An array of ValueExps.
-
Returns:
-
A QueryExp that represents the constraint.
The returned object will be serialized as an instance of the non-public class
javax.management.InQueryExp
.
value
public static StringValueExp value(String val)
-
Returns a new string expression.
-
-
Parameters:
-
val - The string value.
-
Returns:
-
A ValueExp object containing the string argument.
value
public static ValueExp value(Number val)
-
Returns a numeric value expression that can be used in any Query call that expects a ValueExp.
-
-
Parameters:
-
val - An instance of Number.
-
Returns:
-
A ValueExp object containing the argument.
The returned object will be serialized as an instance of the non-public class
javax.management.NumericValueExp
.
value
public static ValueExp value(int val)
-
Returns a numeric value expression that can be used in any Query call that expects a ValueExp.
-
-
Parameters:
-
val - An int value.
-
Returns:
-
A ValueExp object containing the argument.
The returned object will be serialized as an instance of the non-public class
javax.management.NumericValueExp
.
value
public static ValueExp value(long val)
-
Returns a numeric value expression that can be used in any Query call that expects a ValueExp.
-
-
Parameters:
-
val - A long value.
-
Returns:
-
A ValueExp object containing the argument.
The returned object will be serialized as an instance of the non-public class
javax.management.NumericValueExp
.
value
public static ValueExp value(float val)
-
Returns a numeric value expression that can be used in any Query call that expects a ValueExp.
-
-
Parameters:
-
val - A float value.
-
Returns:
-
A ValueExp object containing the argument.
The returned object will be serialized as an instance of the non-public class
javax.management.NumericValueExp
.
value
public static ValueExp value(double val)
-
Returns a numeric value expression that can be used in any Query call that expects a ValueExp.
-
-
Parameters:
-
val - A double value.
-
Returns:
-
A ValueExp object containing the argument.
The returned object will be serialized as an instance of the non-public class
javax.management.NumericValueExp
.
value
public static ValueExp value(boolean val)
-
Returns a boolean value expression that can be used in any Query call that expects a ValueExp.
-
-
Parameters:
-
val - A boolean value.
-
Returns:
-
A ValueExp object containing the argument.
The returned object will be serialized as an instance of the non-public class
javax.management.BooleanValueExp
.
plus
public static ValueExp plus(ValueExp value1,
ValueExp value2)
-
Returns a binary expression representing the sum of two numeric values, or the concatenation of two string values.
-
-
Parameters:
-
value1 - The first '+' operand.
-
value2 - The second '+' operand.
-
Returns:
-
A ValueExp representing the sum or concatenation of the two arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryOpValueExp
with an op equal to
PLUS
.
times
public static ValueExp times(ValueExp value1,
ValueExp value2)
-
Returns a binary expression representing the product of two numeric values.
-
-
Parameters:
-
value1 - The first '*' operand.
-
value2 - The second '*' operand.
-
Returns:
-
A ValueExp representing the product.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryOpValueExp
with an op equal to
TIMES
.
minus
public static ValueExp minus(ValueExp value1,
ValueExp value2)
-
Returns a binary expression representing the difference between two numeric values.
-
-
Parameters:
-
value1 - The first '-' operand.
-
value2 - The second '-' operand.
-
Returns:
-
A ValueExp representing the difference between two arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryOpValueExp
with an op equal to
MINUS
.
div
public static ValueExp div(ValueExp value1,
ValueExp value2)
-
Returns a binary expression representing the quotient of two numeric values.
-
-
Parameters:
-
value1 - The first '/' operand.
-
value2 - The second '/' operand.
-
Returns:
-
A ValueExp representing the quotient of two arguments.
The returned object will be serialized as an instance of the non-public class
javax.management.BinaryOpValueExp
with an op equal to
DIV
.
initialSubString
public static QueryExp initialSubString(AttributeValueExp a,
StringValueExp s)
-
Returns a query expression that represents a matching constraint on a string argument. The value must start with the given literal string value.
-
-
Parameters:
-
a - An attribute expression.
-
s - A string value expression representing the beginning of the string value.
-
Returns:
-
The constraint that a matches s.
The returned object will be serialized as an instance of the non-public class
javax.management.MatchQueryExp
.
anySubString
public static QueryExp anySubString(AttributeValueExp a,
StringValueExp s)
-
Returns a query expression that represents a matching constraint on a string argument. The value must contain the given literal string value.
-
-
Parameters:
-
a - An attribute expression.
-
s - A string value expression representing the substring.
-
Returns:
-
The constraint that a matches s.
The returned object will be serialized as an instance of the non-public class
javax.management.MatchQueryExp
.
finalSubString
public static QueryExp finalSubString(AttributeValueExp a,
StringValueExp s)
-
Returns a query expression that represents a matching constraint on a string argument. The value must end with the given literal string value.
-
-
Parameters:
-
a - An attribute expression.
-
s - A string value expression representing the end of the string value.
-
Returns:
-
The constraint that a matches s.
The returned object will be serialized as an instance of the non-public class
javax.management.MatchQueryExp
.
isInstanceOf
public static QueryExp isInstanceOf(
StringValueExp![](../../diffpics/oold.gif)
String
classNameValue) ![](../../diffpics/oold.gif)
className)
-
Returns a query expression that represents an inheritance constraint on an MBean class.
Example: to find MBeans that are instances of
NotificationBroadcaster
Evaluating this expression for a given objectName includes performing
MBeanServer.isInstanceOf(objectName, className)
, use Query.isInstanceOf(Query.value(NotificationBroadcaster.class.getName())).
Evaluating this expression for a given objectName includes performing
MBeanServer.isInstanceOf(objectName, ((StringValueExp)classNameValue.apply(objectName)).getValue()
.
-
-
Parameters:
-
classNameValue - The
StringValueExp
returning the name of the class of which selected MBeans should be instances.
className - The class name used to query an mbean.
-
Returns:
-
a query expression that represents an inheritance constraint on an MBean class.
The returned object will be serialized as an instance of the non-public class
javax.management.InstanceOfQueryExp
.
-
Since:
-
1.6