Modifier and Type	Class and Description
private static class	PropertyOrFieldReference.AccessorValueRef

Modifier and Type	Field and Description
private volatile PropertyAccessor	cachedReadAccessor
private volatile PropertyAccessor	cachedWriteAccessor
private final String	name
private final boolean	nullSafe
private String	originalPrimitiveExitTypeDescriptor

Access	Constructor and Description
public	PropertyOrFieldReference(boolean nullSafe, String propertyOrFieldName, int startPos, int endPos)

Method Summary

Modifier and Type	Method and Description
public void	generateCode(MethodVisitor the ASM MethodVisitor into which code should be generated mv, CodeFlow a context object with info about what is on the stack cf) Overrides org.springframework.expression.spel.ast.SpelNodeImpl.generateCode. Generate the bytecode for this node into the supplied visitor.
public String	getName() Get the name of the referenced property or field.
private List<PropertyAccessor>	Returns: a list of resolvers that should be tried in order to access the property getPropertyAccessorsToTry(Object the object upon which property access is being attempted contextObject, List<PropertyAccessor> propertyAccessors) Determines the set of property resolvers that should be used to try and access a property on the specified target type.
public TypedValue	getValueInternal(ExpressionState state) Implements abstract org.springframework.expression.spel.ast.SpelNodeImpl.getValueInternal.
private TypedValue	getValueInternal(TypedValue contextObject, EvaluationContext evalContext, boolean isAutoGrowNullReferences)
public ValueRef	getValueRef(ExpressionState state) Overrides org.springframework.expression.spel.ast.SpelNodeImpl.getValueRef.
public boolean	isCompilable() Overrides org.springframework.expression.spel.ast.SpelNodeImpl.isCompilable. Check whether a node can be compiled to bytecode.
public boolean	isNullSafe() Does this node represent a null-safe property or field reference?
public boolean	isWritable(ExpressionState the current expression state (includes the context) state) Overrides org.springframework.expression.spel.ast.SpelNodeImpl.isWritable. Implements org.springframework.expression.spel.SpelNode.isWritable. Determine if this expression node will support a setValue() call.
public boolean	isWritableProperty(String name, TypedValue contextObject, EvaluationContext evalContext)
private TypedValue	Returns: the value of the property readProperty(TypedValue contextObject, EvaluationContext evalContext, String name) Attempt to read the named property from the current context object.
pack-priv void	setExitTypeDescriptor(String descriptor)
public TypedValue	setValueInternal(ExpressionState the current expression state (includes the context) state, Supplier<TypedValue> a supplier of the new value valueSupplier) Overrides org.springframework.expression.spel.ast.SpelNodeImpl.setValueInternal. Evaluate the expression to a node and then set the new value created by the specified `Supplier` on that node.
public String	toStringAST() Implements org.springframework.expression.spel.SpelNode.toStringAST. Return the string form of this AST node.
private void	writeProperty(TypedValue contextObject, EvaluationContext evalContext, String name, Object newValue)

Inherited from org.springframework.expression.spel.ast.SpelNodeImpl:: generateCodeForArgument generateCodeForArguments getChild getChildCount getEndPosition getExitDescriptor getObjectClass getStartPosition getTypedValue getValue getValue nextChildIs setValue

Field Detail

cachedReadAccessor	back to summary
private volatile PropertyAccessor cachedReadAccessor Annotations @Nullable

cachedWriteAccessor	back to summary
private volatile PropertyAccessor cachedWriteAccessor Annotations @Nullable

name	back to summary
private final String name

nullSafe	back to summary
private final boolean nullSafe

originalPrimitiveExitTypeDescriptor	back to summary
private String originalPrimitiveExitTypeDescriptor Annotations @Nullable

Constructor Detail

PropertyOrFieldReference	back to summary
public PropertyOrFieldReference(boolean nullSafe, String propertyOrFieldName, int startPos, int endPos)

Method Detail

generateCode	back to summary
public void generateCode(MethodVisitor mv, CodeFlow cf) Overrides org.springframework.expression.spel.ast.SpelNodeImpl.generateCode. Doc from org.springframework.expression.spel.ast.SpelNodeImpl.generateCode. Generate the bytecode for this node into the supplied visitor. Context info about the current expression being compiled is available in the codeflow object, e.g. including information about the type of the object currently on the stack. Parameters mv:MethodVisitor the ASM MethodVisitor into which code should be generated cf:CodeFlow a context object with info about what is on the stack Annotations @Override

generateCode

back to summary

public void generateCode(MethodVisitor mv, CodeFlow cf)

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.generateCode.

Doc from org.springframework.expression.spel.ast.SpelNodeImpl.generateCode.

Generate the bytecode for this node into the supplied visitor. Context info about the current expression being compiled is available in the codeflow object, e.g. including information about the type of the object currently on the stack.

Parameters

mv:MethodVisitor: the ASM MethodVisitor into which code should be generated
cf:CodeFlow: a context object with info about what is on the stack

Annotations

@Override

getName	back to summary
public String getName() Get the name of the referenced property or field.

getPropertyAccessorsToTry	back to summary
private List<PropertyAccessor> getPropertyAccessorsToTry(Object contextObject, List<PropertyAccessor> propertyAccessors) Determines the set of property resolvers that should be used to try and access a property on the specified target type. The resolvers are considered to be in an ordered list, however in the returned list any that are exact matches for the input target type (as opposed to 'general' resolvers that could work for any type) are placed at the start of the list. In addition, there are specific resolvers that exactly name the class in question and resolvers that name a specific class but it is a supertype of the class we have. These are put at the end of the specific resolvers set and will be tried after exactly matching accessors but before generic accessors. Parameters contextObject:Object the object upon which property access is being attempted Returns:List<PropertyAccessor> a list of resolvers that should be tried in order to access the property

getPropertyAccessorsToTry

back to summary

private List<PropertyAccessor> getPropertyAccessorsToTry(Object contextObject, List<PropertyAccessor> propertyAccessors)

Determines the set of property resolvers that should be used to try and access a property on the specified target type. The resolvers are considered to be in an ordered list, however in the returned list any that are exact matches for the input target type (as opposed to 'general' resolvers that could work for any type) are placed at the start of the list. In addition, there are specific resolvers that exactly name the class in question and resolvers that name a specific class but it is a supertype of the class we have. These are put at the end of the specific resolvers set and will be tried after exactly matching accessors but before generic accessors.

Parameters

contextObject:Object: the object upon which property access is being attempted

Returns:List<PropertyAccessor>

a list of resolvers that should be tried in order to access the property

getValueInternal	back to summary
public TypedValue getValueInternal(ExpressionState state) throws EvaluationException Implements abstract org.springframework.expression.spel.ast.SpelNodeImpl.getValueInternal. Annotations @Override

getValueInternal

back to summary

public TypedValue getValueInternal(ExpressionState state) throws EvaluationException

Implements abstract org.springframework.expression.spel.ast.SpelNodeImpl.getValueInternal.

Annotations

@Override

getValueInternal	back to summary
private TypedValue getValueInternal(TypedValue contextObject, EvaluationContext evalContext, boolean isAutoGrowNullReferences) throws EvaluationException

getValueRef	back to summary
public ValueRef getValueRef(ExpressionState state) throws EvaluationException Overrides org.springframework.expression.spel.ast.SpelNodeImpl.getValueRef. Annotations @Override

getValueRef

back to summary

public ValueRef getValueRef(ExpressionState state) throws EvaluationException

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.getValueRef.

Annotations

@Override

isCompilable back to summary

isCompilable	back to summary
public boolean isCompilable() Overrides org.springframework.expression.spel.ast.SpelNodeImpl.isCompilable. Doc from org.springframework.expression.spel.ast.SpelNodeImpl.isCompilable. Check whether a node can be compiled to bytecode. The reasoning in each node may be different but will typically involve checking whether the exit type descriptor of the node is known and any relevant child nodes are compilable. Returns:boolean `true` if this node can be compiled to bytecode Annotations @Override

public boolean isCompilable()

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.isCompilable.

Doc from org.springframework.expression.spel.ast.SpelNodeImpl.isCompilable.

Check whether a node can be compiled to bytecode. The reasoning in each node may be different but will typically involve checking whether the exit type descriptor of the node is known and any relevant child nodes are compilable.

Returns:boolean

true if this node can be compiled to bytecode

Annotations

@Override

isNullSafe	back to summary
public boolean isNullSafe() Does this node represent a null-safe property or field reference?

isWritable	back to summary
public boolean isWritable(ExpressionState state) throws EvaluationException Overrides org.springframework.expression.spel.ast.SpelNodeImpl.isWritable. Implements org.springframework.expression.spel.SpelNode.isWritable. Doc from org.springframework.expression.spel.SpelNode.isWritable. Determine if this expression node will support a setValue() call. Parameters state:ExpressionState the current expression state (includes the context) Returns:boolean true if the expression node will allow setValue() Annotations @Override Exceptions EvaluationException: if something went wrong trying to determine if the node supports writing

isWritable

back to summary

public boolean isWritable(ExpressionState state) throws EvaluationException

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.isWritable.

Implements org.springframework.expression.spel.SpelNode.isWritable.

Doc from org.springframework.expression.spel.SpelNode.isWritable.

Determine if this expression node will support a setValue() call.

Parameters

state:ExpressionState: the current expression state (includes the context)

Returns:boolean

true if the expression node will allow setValue()

Annotations

@Override

Exceptions

EvaluationException:: if something went wrong trying to determine if the node supports writing

isWritableProperty	back to summary
public boolean isWritableProperty(String name, TypedValue contextObject, EvaluationContext evalContext) throws EvaluationException

readProperty	back to summary
private TypedValue readProperty(TypedValue contextObject, EvaluationContext evalContext, String name) throws EvaluationException Attempt to read the named property from the current context object. Returns:TypedValue the value of the property Exceptions EvaluationException: if any problem accessing the property, or if it cannot be found

readProperty

back to summary

private TypedValue readProperty(TypedValue contextObject, EvaluationContext evalContext, String name) throws EvaluationException

Attempt to read the named property from the current context object.

Returns:TypedValue

the value of the property

Exceptions

EvaluationException:: if any problem accessing the property, or if it cannot be found

setExitTypeDescriptor	back to summary
pack-priv void setExitTypeDescriptor(String descriptor)

setValueInternal back to summary

setValueInternal	back to summary
public TypedValue setValueInternal(ExpressionState state, Supplier<TypedValue> valueSupplier) throws EvaluationException Overrides org.springframework.expression.spel.ast.SpelNodeImpl.setValueInternal. Doc from org.springframework.expression.spel.ast.SpelNodeImpl.setValueInternal. Evaluate the expression to a node and then set the new value created by the specified `Supplier` on that node. For example, if the expression evaluates to a property reference, then the property will be set to the new value. Favor this method over `setValue(ExpressionState, Object)` when the value should be lazily computed. By default, this method throws a `SpelEvaluationException`, effectively disabling this feature. Subclasses may override this method to provide an actual implementation. Parameters state:ExpressionState the current expression state (includes the context) valueSupplier:Supplier<TypedValue> a supplier of the new value Annotations @Override Exceptions EvaluationException: if any problem occurs evaluating the expression or setting the new value

public TypedValue setValueInternal(ExpressionState state, Supplier<TypedValue> valueSupplier) throws EvaluationException

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.setValueInternal.

Doc from org.springframework.expression.spel.ast.SpelNodeImpl.setValueInternal.

Evaluate the expression to a node and then set the new value created by the specified Supplier on that node.

For example, if the expression evaluates to a property reference, then the property will be set to the new value.

Favor this method over setValue(ExpressionState, Object) when the value should be lazily computed.

By default, this method throws a SpelEvaluationException, effectively disabling this feature. Subclasses may override this method to provide an actual implementation.

Parameters

state:ExpressionState: the current expression state (includes the context)
valueSupplier:Supplier<TypedValue>: a supplier of the new value

Annotations

@Override

Exceptions

EvaluationException:: if any problem occurs evaluating the expression or setting the new value

toStringAST	back to summary
public String toStringAST() Implements org.springframework.expression.spel.SpelNode.toStringAST. Doc from org.springframework.expression.spel.SpelNode.toStringAST. Return the string form of this AST node. Returns:String the string form Annotations @Override

toStringAST

back to summary

public String toStringAST()

Implements org.springframework.expression.spel.SpelNode.toStringAST.

Doc from org.springframework.expression.spel.SpelNode.toStringAST.

Return the string form of this AST node.

Returns:String

the string form

Annotations

@Override

writeProperty	back to summary
private void writeProperty(TypedValue contextObject, EvaluationContext evalContext, String name, Object newValue) throws EvaluationException

org.springframework.expression.spel.ast back to summary

private Class PropertyOrFieldReference.AccessorValueRef

Class Inheritance

extends Object
implements ValueRef

java.lang.Object
org.springframework.expression.spel.ast.PropertyOrFieldReference.AccessorValueRef

All Implemented Interfaces

org.springframework.expression.spel.ast.ValueRef

Field Summary

Modifier and Type	Field and Description
private final boolean	autoGrowNullReferences
private final TypedValue	contextObject
private final EvaluationContext	evalContext
private final PropertyOrFieldReference	ref

Constructor Summary

Access	Constructor and Description
public	AccessorValueRef(PropertyOrFieldReference propertyOrFieldReference, TypedValue activeContextObject, EvaluationContext evalContext, boolean autoGrowNullReferences)

Method Summary

Modifier and Type	Method and Description
public TypedValue	getValue() Implements org.springframework.expression.spel.ast.ValueRef.getValue. Returns the value this ValueRef points to, it should not require expression component re-evaluation.
public boolean	isWritable() Implements org.springframework.expression.spel.ast.ValueRef.isWritable. Indicates whether calling setValue(Object) is supported.
public void	setValue(Object the new value newValue) Implements org.springframework.expression.spel.ast.ValueRef.setValue. Sets the value this ValueRef points to, it should not require expression component re-evaluation.

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

Field Detail

autoGrowNullReferences	back to summary
private final boolean autoGrowNullReferences

contextObject	back to summary
private final TypedValue contextObject

evalContext	back to summary
private final EvaluationContext evalContext

ref	back to summary
private final PropertyOrFieldReference ref

Constructor Detail

AccessorValueRef	back to summary
public AccessorValueRef(PropertyOrFieldReference propertyOrFieldReference, TypedValue activeContextObject, EvaluationContext evalContext, boolean autoGrowNullReferences)

Method Detail

getValue	back to summary
public TypedValue getValue() Implements org.springframework.expression.spel.ast.ValueRef.getValue. Doc from org.springframework.expression.spel.ast.ValueRef.getValue. Returns the value this ValueRef points to, it should not require expression component re-evaluation. Returns:TypedValue the value Annotations @Override

getValue

back to summary

public TypedValue getValue()

Implements org.springframework.expression.spel.ast.ValueRef.getValue.

Doc from org.springframework.expression.spel.ast.ValueRef.getValue.

Returns the value this ValueRef points to, it should not require expression component re-evaluation.

Returns:TypedValue

the value

Annotations

@Override

isWritable	back to summary
public boolean isWritable() Implements org.springframework.expression.spel.ast.ValueRef.isWritable. Doc from org.springframework.expression.spel.ast.ValueRef.isWritable. Indicates whether calling setValue(Object) is supported. Returns:boolean true if setValue() is supported for this value reference. Annotations @Override

isWritable

back to summary

public boolean isWritable()

Implements org.springframework.expression.spel.ast.ValueRef.isWritable.

Doc from org.springframework.expression.spel.ast.ValueRef.isWritable.

Indicates whether calling setValue(Object) is supported.

Returns:boolean

true if setValue() is supported for this value reference.

Annotations

@Override

setValue	back to summary
public void setValue(Object newValue) Implements org.springframework.expression.spel.ast.ValueRef.setValue. Doc from org.springframework.expression.spel.ast.ValueRef.setValue. Sets the value this ValueRef points to, it should not require expression component re-evaluation. Parameters newValue:Object the new value Annotations @Override

setValue

back to summary

public void setValue(Object newValue)

Implements org.springframework.expression.spel.ast.ValueRef.setValue.

Doc from org.springframework.expression.spel.ast.ValueRef.setValue.

Sets the value this ValueRef points to, it should not require expression component re-evaluation.

Parameters

newValue:Object: the new value

Annotations

@Override

public Class PropertyOrFieldReference

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class PropertyOrFieldReference.AccessorValueRef

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail