Modifier and Type	Class and Description
protected static class	CachedExpressionEvaluator.ExpressionKey An expression key.

Modifier and Type	Field and Description
private final ParameterNameDiscoverer	parameterNameDiscoverer
private final SpelExpressionParser	parser

Access	Constructor and Description
protected	CachedExpressionEvaluator(SpelExpressionParser parser) Create a new instance with the specified `SpelExpressionParser`.
protected	CachedExpressionEvaluator() Create a new instance with a default `SpelExpressionParser`.

Modifier and Type	Method and Description
private CachedExpressionEvaluator.ExpressionKey	createKey(AnnotatedElementKey elementKey, String expression)
protected Expression	getExpression(Map<CachedExpressionEvaluator.ExpressionKey, Expression> the cache to use cache, AnnotatedElementKey the element on which the expression is defined elementKey, String the expression to parse expression) Return the `Expression` for the specified SpEL value `Parse the expression` if it hasn't been already.
protected ParameterNameDiscoverer	getParameterNameDiscoverer() Return a shared parameter name discoverer which caches data internally.
protected SpelExpressionParser	getParser() Return the `SpelExpressionParser` to use.
protected Expression	parseExpression(String the expression to parse expression) Parse the specified `expression`.

parameterNameDiscoverer	back to summary
private final ParameterNameDiscoverer parameterNameDiscoverer

parser	back to summary
private final SpelExpressionParser parser

CachedExpressionEvaluator	back to summary
protected CachedExpressionEvaluator(SpelExpressionParser parser) Create a new instance with the specified `SpelExpressionParser`.

CachedExpressionEvaluator	back to summary
protected CachedExpressionEvaluator() Create a new instance with a default `SpelExpressionParser`.

createKey	back to summary
private CachedExpressionEvaluator.ExpressionKey createKey(AnnotatedElementKey elementKey, String expression)

getExpression	back to summary
protected Expression getExpression(Map<CachedExpressionEvaluator.ExpressionKey, Expression> cache, AnnotatedElementKey elementKey, String expression) Return the `Expression` for the specified SpEL value `Parse the expression` if it hasn't been already. Parameters cache:Map<CachedExpressionEvaluator.ExpressionKey, Expression> the cache to use elementKey:AnnotatedElementKey the element on which the expression is defined expression:String the expression to parse

getParameterNameDiscoverer	back to summary
protected ParameterNameDiscoverer getParameterNameDiscoverer() Return a shared parameter name discoverer which caches data internally. Since 4.3

getParser	back to summary
protected SpelExpressionParser getParser() Return the `SpelExpressionParser` to use.

parseExpression	back to summary
protected Expression parseExpression(String expression) Parse the specified `expression`. Parameters expression:String the expression to parse Since 5.3.13

org.springframework.context.expression back to summary

protected Class CachedExpressionEvaluator.ExpressionKey

Class Inheritance

extends Object
implements Comparable<CachedExpressionEvaluator.ExpressionKey>

java.lang.Object
org.springframework.context.expression.CachedExpressionEvaluator.ExpressionKey

All Implemented Interfaces

java.lang.Comparable

An expression key.

Field Summary

Modifier and Type	Field and Description
private final AnnotatedElementKey	element
private final String	expression

Constructor Summary

Access	Constructor and Description
protected	ExpressionKey(AnnotatedElementKey element, String expression)

Method Summary

Modifier and Type	Method and Description
public int	compareTo(CachedExpressionEvaluator.ExpressionKey the object to be compared. other) Implements java.lang.Comparable.compareTo. Compares this object with the specified object for order.
public boolean	equals(Object the reference object with which to compare. other) Overrides java.lang.Object.equals. Indicates whether some other object is "equal to" this one.
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for the object.
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.

Inherited from java.lang.Object:: clone finalize getClass notify notifyAll wait wait wait

Field Detail

element	back to summary
private final AnnotatedElementKey element

expression	back to summary
private final String expression

Constructor Detail

ExpressionKey	back to summary
protected ExpressionKey(AnnotatedElementKey element, String expression)

Method Detail

compareTo back to summary

compareTo	back to summary
public int compareTo(CachedExpressionEvaluator.ExpressionKey other) Implements java.lang.Comparable.compareTo. Doc from java.lang.Comparable.compareTo. Compares this object with the specified object for order. Returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object. The implementor must ensure `signum(x.compareTo(y)) == -signum(y.compareTo(x))` for all `x` and `y`. (This implies that `x.compareTo(y)` must throw an exception if and only if `y.compareTo(x)` throws an exception.) The implementor must also ensure that the relation is transitive: `(x.compareTo(y) > 0 && y.compareTo(z) > 0)` implies `x.compareTo(z) > 0`. Finally, the implementor must ensure that `x.compareTo(y)==0` implies that `signum(x.compareTo(z)) == signum(y.compareTo(z))`, for all `z`. Parameters other:CachedExpressionEvaluator.ExpressionKey the object to be compared. Returns:int a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object. Annotations @Override

public int compareTo(CachedExpressionEvaluator.ExpressionKey other)

Implements java.lang.Comparable.compareTo.

Doc from java.lang.Comparable.compareTo.

Compares this object with the specified object for order. Returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.

The implementor must ensure signum(x.compareTo(y)) == -signum(y.compareTo(x)) for all x and y. (This implies that x.compareTo(y) must throw an exception if and only if y.compareTo(x) throws an exception.)

The implementor must also ensure that the relation is transitive: (x.compareTo(y) > 0 && y.compareTo(z) > 0) implies x.compareTo(z) > 0.

Finally, the implementor must ensure that x.compareTo(y)==0 implies that signum(x.compareTo(z)) == signum(y.compareTo(z)), for all z.

Parameters

other:CachedExpressionEvaluator.ExpressionKey: the object to be compared.

Returns:int

a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.

Annotations

@Override

equals back to summary

equals	back to summary
public boolean equals(Object other) Overrides java.lang.Object.equals. Doc from java.lang.Object.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Parameters other:Object the reference object with which to compare. Returns:boolean `true` if this object is the same as the obj argument; `false` otherwise. Annotations @Override

public boolean equals(Object other)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters

other:Object: the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations

@Override

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method 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. Returns:int a hash code value for this object. Annotations @Override

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method 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.

Returns:int

a hash code value for this object.

Annotations

@Override

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Returns:String a string representation of the object. Annotations @Override

toString

back to summary

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object.

Returns:String

a string representation of the object.

Annotations

@Override

public abstract Class CachedExpressionEvaluator

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

protected Class CachedExpressionEvaluator.ExpressionKey

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail