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JavaTM 2 Platform Ent. Ed. v1.4 |
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java.lang.Object javax.management.Query
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")));
Field Summary | |
static int |
DIV
A code representing the div(javax.management.ValueExp, javax.management.ValueExp) expression. |
static int |
EQ
A code representing the eq(javax.management.ValueExp, javax.management.ValueExp) query. |
static int |
GE
A code representing the geq(javax.management.ValueExp, javax.management.ValueExp) query. |
static int |
GT
A code representing the gt(javax.management.ValueExp, javax.management.ValueExp) query. |
static int |
LE
A code representing the leq(javax.management.ValueExp, javax.management.ValueExp) query. |
static int |
LT
A code representing the lt(javax.management.ValueExp, javax.management.ValueExp) query. |
static int |
MINUS
A code representing the minus(javax.management.ValueExp, javax.management.ValueExp) expression. |
static int |
PLUS
A code representing the plus(javax.management.ValueExp, javax.management.ValueExp) expression. |
static int |
TIMES
A code representing the times(javax.management.ValueExp, javax.management.ValueExp) expression. |
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 |
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 |
Field Detail |
public static final int GT
gt(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly
of interest for the serialized form of queries.
public static final int LT
lt(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly
of interest for the serialized form of queries.
public static final int GE
geq(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly
of interest for the serialized form of queries.
public static final int LE
leq(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly
of interest for the serialized form of queries.
public static final int EQ
eq(javax.management.ValueExp, javax.management.ValueExp)
query. This is chiefly
of interest for the serialized form of queries.
public static final int PLUS
plus(javax.management.ValueExp, javax.management.ValueExp)
expression. This
is chiefly of interest for the serialized form of queries.
public static final int MINUS
minus(javax.management.ValueExp, javax.management.ValueExp)
expression. This
is chiefly of interest for the serialized form of queries.
public static final int TIMES
times(javax.management.ValueExp, javax.management.ValueExp)
expression. This
is chiefly of interest for the serialized form of queries.
public static final int DIV
div(javax.management.ValueExp, javax.management.ValueExp)
expression. This is
chiefly of interest for the serialized form of queries.
Constructor Detail |
public Query()
Method Detail |
public static QueryExp and(QueryExp q1, QueryExp q2)
q1
- A query expression.q2
- Another query expression.
public static QueryExp or(QueryExp q1, QueryExp q2)
q1
- A query expression.q2
- Another query expression.
public static QueryExp gt(ValueExp v1, ValueExp v2)
v1
- A value expression.v2
- Another value expression.
public static QueryExp geq(ValueExp v1, ValueExp v2)
v1
- A value expression.v2
- Another value expression.
public static QueryExp leq(ValueExp v1, ValueExp v2)
v1
- A value expression.v2
- Another value expression.
public static QueryExp lt(ValueExp v1, ValueExp v2)
v1
- A value expression.v2
- Another value expression.
public static QueryExp eq(ValueExp v1, ValueExp v2)
v1
- A value expression.v2
- Another value expression.
public static QueryExp between(ValueExp v1, ValueExp v2, ValueExp v3)
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.
public static QueryExp match(AttributeValueExp a, StringValueExp s)
a
- An attribute expressions
- A string value expression representing a matching constraint
public static AttributeValueExp attr(String name)
Returns a new attribute expression.
Evaluating this expression for a given
objectName
includes performing MBeanServer.getAttribute(objectName,
name)
.
name
- The name of the attribute.
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)
.
className
- The name of the class possessing the attribute.name
- The name of the attribute.
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)
.
public static QueryExp not(QueryExp queryExp)
queryExp
- The constraint to negate.
public static QueryExp in(ValueExp val, ValueExp[] valueList)
val
- A value to be constrained.valueList
- An array of ValueExps.
public static StringValueExp value(String val)
val
- The string value.
public static ValueExp value(Number val)
val
- An instance of Number.
public static ValueExp value(int val)
val
- An int value.
public static ValueExp value(long val)
val
- A long value.
public static ValueExp value(float val)
val
- A float value.
public static ValueExp value(double val)
val
- A double value.
public static ValueExp value(boolean val)
val
- A boolean value.
public static ValueExp plus(ValueExp value1, ValueExp value2)
value1
- The first '+' operand.value2
- The second '+' operand.
public static ValueExp times(ValueExp value1, ValueExp value2)
value1
- The first '*' operand.value2
- The second '*' operand.
public static ValueExp minus(ValueExp value1, ValueExp value2)
value1
- The first '-' operand.value2
- The second '-' operand.
public static ValueExp div(ValueExp value1, ValueExp value2)
value1
- The first '/' operand.value2
- The second '/' operand.
public static QueryExp initialSubString(AttributeValueExp a, StringValueExp s)
a
- An attribute expression.s
- A string value expression representing the beginning of the string value.
public static QueryExp anySubString(AttributeValueExp a, StringValueExp s)
a
- An attribute expression.s
- A string value expression representing the substring.
public static QueryExp finalSubString(AttributeValueExp a, StringValueExp s)
a
- An attribute expression.s
- A string value expression representing the end of the string value.
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JavaTM 2 Platform Ent. Ed. v1.4 |
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Copyright 2003 Sun Microsystems, Inc. All rights reserved.