javax.management
Class Query

java.lang.Object
  javax.management.Query

public class Query

extends Object

This class is a factory for constructing queries.

REVIEW: Full explanation. See the spec for now for what it's worth.

Version:

$Revision: 1.2.8.2 $

Author:

Adrian Brock.

Field Summary

static int	DIV Divide expression
static int	EQ Equals expression
static int	GE Greater than or equals expression
static int	GT Greater than expression
static int	LE Less than or equals expression
static int	LT Less than expression
static int	MINUS Minus expression
static int	PLUS Plus expression
static int	TIMES Times expression

Constructor Summary

Query()
Construct a new Query

Method Summary

static QueryExp	and(QueryExp first, QueryExp second) And Query expression.
static QueryExp	anySubString(AttributeValueExp attr, StringValueExp string) Tests an attribute contains a string as a subset.
static AttributeValueExp	attr(String value) An attribute expression
static AttributeValueExp	attr(String className, String value) An attribute expression restricted to a specific class
static QueryExp	between(ValueExp test, ValueExp lower, ValueExp higher) Tests a value is between two other values.
static AttributeValueExp	classattr() What is this?
static ValueExp	div(ValueExp first, ValueExp second) An expression that divides the first expression by the second
static QueryExp	eq(ValueExp first, ValueExp second) Equals Comparison.
static QueryExp	finalSubString(AttributeValueExp attr, StringValueExp string) Tests an attribute ends with a string as a subset.
static QueryExp	geq(ValueExp first, ValueExp second) Greater than or Equals Comparison.
static QueryExp	gt(ValueExp first, ValueExp second) Greater than.
static QueryExp	in(ValueExp test, ValueExp[] list) Tests a value is in one of the listed values.
static QueryExp	initialSubString(AttributeValueExp attr, StringValueExp string) Tests an attribute starts with a string as a subset.
static QueryExp	leq(ValueExp first, ValueExp second) Less than or equal.
static QueryExp	lt(ValueExp first, ValueExp second) Less than.
static QueryExp	match(AttributeValueExp attr, StringValueExp string) Tests an attribute equals a string value.
static ValueExp	minus(ValueExp first, ValueExp second) An expression that subtracts the second expression from the first
static QueryExp	not(QueryExp expression) Not Query expression.
static QueryExp	or(QueryExp first, QueryExp second) Or Query expression.
static ValueExp	plus(ValueExp first, ValueExp second) An expression that adds the second expression to the first
static ValueExp	times(ValueExp first, ValueExp second) An expression that multiplies the first expression by the second
static ValueExp	value(boolean value) Create a boolean value expression for use in a Query.
static ValueExp	value(double value) Create a double value expression for use in a Query.
static ValueExp	value(float value) Create a float value expression for use in a Query.
static ValueExp	value(int value) Create an integer value expression for use in a Query.
static ValueExp	value(long value) Create a long value expression for use in a Query.
static ValueExp	value(Number value) Create a number value expression for use in a Query.
static StringValueExp	value(String value) Create a string value expression for use in a Query.

Methods inherited from class java.lang.Object

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

Field Detail

DIV

public static final int DIV

Divide expression

See Also:

Constant Field Values

EQ

public static final int EQ

Equals expression

See Also:

Constant Field Values

GE

public static final int GE

Greater than or equals expression

See Also:

Constant Field Values

GT

public static final int GT

Greater than expression

See Also:

Constant Field Values

LE

public static final int LE

Less than or equals expression

See Also:

Constant Field Values

LT

public static final int LT

Less than expression

See Also:

Constant Field Values

MINUS

public static final int MINUS

Minus expression

See Also:

Constant Field Values

PLUS

public static final int PLUS

Plus expression

See Also:

Constant Field Values

TIMES

public static final int TIMES

Times expression

See Also:

Constant Field Values

Constructor Detail

Query

public Query()

Construct a new Query

Method Detail

and

public static QueryExp and(QueryExp first,
                           QueryExp second)

And Query expression. Return true only when both expressions are true.

Parameters:

first - the first expression

second - the second expression

Returns:

the expression

anySubString

public static QueryExp anySubString(AttributeValueExp attr,
                                    StringValueExp string)

Tests an attribute contains a string as a subset. Return true when this is the case, false otherwise.

Parameters:

attr - the attribute

string - the string

Returns:

the expression

attr

public static AttributeValueExp attr(String value)

An attribute expression

Parameters:

value - the name of the attribute

Returns:

the expression

attr

public static AttributeValueExp attr(String className,
                                     String value)

An attribute expression restricted to a specific class

Parameters:

className - the name of the class

value - the name of the attribute

Returns:

the expression

between

public static QueryExp between(ValueExp test,
                               ValueExp lower,
                               ValueExp higher)

Tests a value is between two other values. Returns true when this is case, false otherwise.

Parameters:

test - the value to test

lower - the lower bound

higher - the higer bound

Returns:

the expression

classattr

public static AttributeValueExp classattr()

What is this?

Returns:

the expression

div

public static ValueExp div(ValueExp first,
                           ValueExp second)

An expression that divides the first expression by the second

Parameters:

first - the first expression

second - the second expression

Returns:

the expression

eq

public static QueryExp eq(ValueExp first,
                          ValueExp second)

Equals Comparison.

Parameters:

first - the first expression

second - the second expression

Returns:

true when first equals second

finalSubString

public static QueryExp finalSubString(AttributeValueExp attr,
                                      StringValueExp string)

Tests an attribute ends with a string as a subset. Return true when this is the case, false otherwise.

Parameters:

attr - the attribute

string - the string

Returns:

the expression

geq

public static QueryExp geq(ValueExp first,
                           ValueExp second)

Greater than or Equals Comparison.

Parameters:

first - the first expression

second - the second expression

Returns:

true when first >= second

gt

public static QueryExp gt(ValueExp first,
                          ValueExp second)

Greater than.

Parameters:

first - the first expression

second - the second expression

Returns:

true when first > second

in

public static QueryExp in(ValueExp test,
                          ValueExp[] list)

Tests a value is in one of the listed values. Returns true when this is case, false otherwise.

Parameters:

test - the value to test

list - an array of values

Returns:

the expression

initialSubString

public static QueryExp initialSubString(AttributeValueExp attr,
                                        StringValueExp string)

Tests an attribute starts with a string as a subset. Return true when this is the case, false otherwise.

Parameters:

attr - the attribute

string - the string

Returns:

the expression

leq

public static QueryExp leq(ValueExp first,
                           ValueExp second)

Less than or equal.

Parameters:

first - the first expression

second - the second expression

Returns:

true when first <= second

lt

public static QueryExp lt(ValueExp first,
                          ValueExp second)

Less than.

Parameters:

first - the first expression

second - the second expression

Returns:

true when first < second

match

public static QueryExp match(AttributeValueExp attr,
                             StringValueExp string)

Tests an attribute equals a string value. Return true when this is the case, false otherwise.

Parameters:

attr - the attribute

string - the string

Returns:

the expression

minus

public static ValueExp minus(ValueExp first,
                             ValueExp second)

An expression that subtracts the second expression from the first

Parameters:

first - the first expression

second - the second expression

Returns:

the expression

not

public static QueryExp not(QueryExp expression)

Not Query expression. Return true only when expression is false.

Parameters:

expression - the expression to negate

Returns:

the expression

or

public static QueryExp or(QueryExp first,
                          QueryExp second)

Or Query expression. Return true when either expression is true.

Parameters:

first - the first expression

second - the second expression

Returns:

the expression

plus

public static ValueExp plus(ValueExp first,
                            ValueExp second)

An expression that adds the second expression to the first

Parameters:

first - the first expression

second - the second expression

Returns:

the expression

times

public static ValueExp times(ValueExp first,
                             ValueExp second)

An expression that multiplies the first expression by the second

Parameters:

first - the first expression

second - the second expression

Returns:

the expression

value

public static ValueExp value(boolean value)

Create a boolean value expression for use in a Query.

Returns:

the expression

value

public static ValueExp value(double value)

Create a double value expression for use in a Query.

Returns:

the expression

value

public static ValueExp value(float value)

Create a float value expression for use in a Query.

Returns:

the expression

value

public static ValueExp value(int value)

Create an integer value expression for use in a Query.

Returns:

the expression

value

public static ValueExp value(long value)

Create a long value expression for use in a Query.

Returns:

the expression

value

public static ValueExp value(Number value)

Create a number value expression for use in a Query.

Returns:

the expression

value

public static StringValueExp value(String value)

Create a string value expression for use in a Query.

Returns:

the expression