Class CompiledValueExpression

java.lang.Object

jakarta.el.Expression

jakarta.el.ValueExpression

io.micronaut.el.runtime.CompiledValueExpression

All Implemented Interfaces:

CompiledExpression, Serializable

Direct Known Subclasses:

LiteralValueExpression

public abstract class CompiledValueExpression
extends jakarta.el.ValueExpression
implements CompiledExpression

The base class of the ValueExpression implementations generated at compilation time.

Subclasses implement evaluate(ELContext), which contains the compiled form of the expression. Expressions that are lvalues additionally override setValue(ELContext, Object), getType(ELContext) and isReadOnly(ELContext).

Since:

1.0

Author:

Denis Stepanov

See Also:

• Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CompiledValueExpression(String expressionString, Class<?> expectedType)
protected	CompiledValueExpression(String expressionString, String canonicalForm, Class<?> expectedType)
protected	CompiledValueExpression(String expressionString, String canonicalForm, Class<?> expectedType, boolean coerced)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
protected abstract @Nullable Object	evaluate(jakarta.el.ELContext context)	Evaluates the compiled expression.
Class<?>	getExpectedType()
final String	getExpressionString()
@Nullable Class<?>	getType(jakarta.el.ELContext context)
<T> @Nullable T	getValue(jakarta.el.ELContext context)
int	hashCode()
boolean	isLiteralText()
boolean	isReadOnly(jakarta.el.ELContext context)
void	setValue(jakarta.el.ELContext context, @Nullable Object value)
String	toString()

Methods inherited from class jakarta.el.ValueExpression

getValueReference

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

CompiledValueExpression

protected CompiledValueExpression(String expressionString,
 Class<?> expectedType)

Parameters:

expressionString - The original expression

expectedType - The expected type of the evaluation result

CompiledValueExpression

protected CompiledValueExpression(String expressionString,
 String canonicalForm,
 Class<?> expectedType)

Parameters:

expressionString - The original expression

canonicalForm - The canonical form of the expression, which is what equality compares

expectedType - The expected type of the evaluation result

CompiledValueExpression

protected CompiledValueExpression(String expressionString,
 String canonicalForm,
 Class<?> expectedType,
 boolean coerced)

Parameters:

expressionString - The original expression

canonicalForm - The canonical form of the expression, which is what equality compares

expectedType - The expected type of the evaluation result

coerced - Whether the result of the evaluation has to be coerced to the expected type, which the compiler knows not to be the case when the static type of the expression is the expected type

Method Details

evaluate

protected abstract @Nullable Object evaluate(jakarta.el.ELContext context)

Evaluates the compiled expression.

Parameters:

context - The context

Returns:

The result of the evaluation, before the coercion to the expected type

getValue

public <T> @Nullable T getValue(jakarta.el.ELContext context)

Specified by:

getValue in class jakarta.el.ValueExpression

setValue

public void setValue(jakarta.el.ELContext context,
 @Nullable Object value)

Specified by:

setValue in class jakarta.el.ValueExpression

isReadOnly

public boolean isReadOnly(jakarta.el.ELContext context)

Specified by:

isReadOnly in class jakarta.el.ValueExpression

getType

public @Nullable Class<?> getType(jakarta.el.ELContext context)

Specified by:

getType in class jakarta.el.ValueExpression

getExpectedType

public Class<?> getExpectedType()

Specified by:

getExpectedType in class jakarta.el.ValueExpression

getExpressionString

public final String getExpressionString()

Specified by:

getExpressionString in interface CompiledExpression

Specified by:

getExpressionString in class jakarta.el.Expression

Returns:

The original expression string

isLiteralText

public boolean isLiteralText()

Specified by:

isLiteralText in class jakarta.el.Expression

equals

public boolean equals(Object obj)

Specified by:

equals in class jakarta.el.Expression

hashCode

public int hashCode()

Specified by:

hashCode in class jakarta.el.Expression

toString

public String toString()

Overrides:

toString in class Object