Spring Expression Language (SpEL) 6.1.4 · org.springframework.expression.EvaluationContext

Method Summary

Modifier and Type	Method and Description
public default TypedValue	Returns: a `TypedValue` wrapping the assigned value assignVariable(String the name of the variable to assign name, Supplier<TypedValue> the supplier of the value to be assigned to the variable valueSupplier) Assign the value created by the specified `Supplier` to a named variable within this evaluation context.
public BeanResolver	getBeanResolver() Return a bean resolver that can look up beans by name.
public List<ConstructorResolver>	getConstructorResolvers() Return a list of resolvers that will be asked in turn to locate a constructor.
public List<MethodResolver>	getMethodResolvers() Return a list of resolvers that will be asked in turn to locate a method.
public OperatorOverloader	getOperatorOverloader() Return an operator overloader that may support mathematical operations between more than the standard set of types.
public List<PropertyAccessor>	getPropertyAccessors() Return a list of accessors that will be asked in turn to read/write a property.
public TypedValue	getRootObject() Return the default root context object against which unqualified properties/methods/etc should be resolved.
public TypeComparator	getTypeComparator() Return a type comparator for comparing pairs of objects for equality.
public TypeConverter	getTypeConverter() Return a type converter that can convert (or coerce) a value from one type to another.
public TypeLocator	getTypeLocator() Return a type locator that can be used to find types, either by short or fully qualified name.
public Object	Returns: the value of the variable, or `null` if not found lookupVariable(String the name of the variable to look up name) Look up a named variable within this evaluation context.
public void	setVariable(String the name of the variable to set name, Object the value to be placed in the variable value) Set a named variable in this evaluation context to a specified value.

Method Detail

assignVariable back to summary

assignVariable	back to summary
public default TypedValue assignVariable(String name, Supplier<TypedValue> valueSupplier) Assign the value created by the specified `Supplier` to a named variable within this evaluation context. In contrast to `setVariable(String, Object)`, this method should only be invoked to support the assignment operator (`=`) within an expression. By default, this method delegates to `setVariable(String, Object)`, providing the value created by the `valueSupplier`. Concrete implementations may override this default method to provide different semantics. Parameters name:String the name of the variable to assign valueSupplier:Supplier<TypedValue> the supplier of the value to be assigned to the variable Returns:TypedValue a `TypedValue` wrapping the assigned value Since 5.2.24

public default TypedValue assignVariable(String name, Supplier<TypedValue> valueSupplier)

Assign the value created by the specified Supplier to a named variable within this evaluation context.

In contrast to setVariable(String, Object), this method should only be invoked to support the assignment operator (=) within an expression.

By default, this method delegates to setVariable(String, Object), providing the value created by the valueSupplier. Concrete implementations may override this default method to provide different semantics.

Parameters

name:String: the name of the variable to assign
valueSupplier:Supplier<TypedValue>: the supplier of the value to be assigned to the variable

Returns:TypedValue

a TypedValue wrapping the assigned value

Since

5.2.24

getBeanResolver	back to summary
public BeanResolver getBeanResolver() Return a bean resolver that can look up beans by name. Annotations @Nullable

getBeanResolver

back to summary

public BeanResolver getBeanResolver()

Return a bean resolver that can look up beans by name.

Annotations

@Nullable

getConstructorResolvers	back to summary
public List<ConstructorResolver> getConstructorResolvers() Return a list of resolvers that will be asked in turn to locate a constructor.

getMethodResolvers	back to summary
public List<MethodResolver> getMethodResolvers() Return a list of resolvers that will be asked in turn to locate a method.

getOperatorOverloader	back to summary
public OperatorOverloader getOperatorOverloader() Return an operator overloader that may support mathematical operations between more than the standard set of types.

getPropertyAccessors	back to summary
public List<PropertyAccessor> getPropertyAccessors() Return a list of accessors that will be asked in turn to read/write a property.

getRootObject	back to summary
public TypedValue getRootObject() Return the default root context object against which unqualified properties/methods/etc should be resolved. This can be overridden when evaluating an expression.

getTypeComparator	back to summary
public TypeComparator getTypeComparator() Return a type comparator for comparing pairs of objects for equality.

getTypeConverter	back to summary
public TypeConverter getTypeConverter() Return a type converter that can convert (or coerce) a value from one type to another.

getTypeLocator	back to summary
public TypeLocator getTypeLocator() Return a type locator that can be used to find types, either by short or fully qualified name.

lookupVariable back to summary

lookupVariable	back to summary
public Object lookupVariable(String name) Look up a named variable within this evaluation context. Parameters name:String the name of the variable to look up Returns:Object the value of the variable, or `null` if not found Annotations @Nullable

public Object lookupVariable(String name)

Look up a named variable within this evaluation context.

Parameters

name:String: the name of the variable to look up

Returns:Object

the value of the variable, or null if not found

Annotations

@Nullable

setVariable back to summary

setVariable	back to summary
public void setVariable(String name, Object value) Set a named variable in this evaluation context to a specified value. In contrast to `assignVariable(String, Supplier)`, this method should only be invoked programmatically when interacting directly with the `EvaluationContext` — for example, to provide initial configuration for the context. Parameters name:String the name of the variable to set value:Object the value to be placed in the variable See Also `lookupVariable(String)`

public void setVariable(String name, Object value)

Set a named variable in this evaluation context to a specified value.

In contrast to assignVariable(String, Supplier), this method should only be invoked programmatically when interacting directly with the EvaluationContext — for example, to provide initial configuration for the context.

Parameters

name:String: the name of the variable to set
value:Object: the value to be placed in the variable

See Also

lookupVariable(String)

public Interface EvaluationContext

Method Summary

Method Detail