Package org.flowable.common.engine.impl.de.odysseus.el

Class ObjectValueExpression

java.lang.Object
org.flowable.common.engine.impl.javax.el.Expression
org.flowable.common.engine.impl.javax.el.ValueExpression
org.flowable.common.engine.impl.de.odysseus.el.ObjectValueExpression
All Implemented Interfaces:
Serializable
public final class ObjectValueExpression extends ValueExpression
Object wrapper expression.
Author:
Christoph Beck
See Also:

  • Constructor Details

    • ObjectValueExpression

      public ObjectValueExpression(TypeConverter converter, Object object, Class<?> type)
      Wrap an object into a value expression.
      Parameters:
      converter - type converter
      object - the object to wrap
      type - the expected type this object will be coerced in getValue(ELContext).

  • Method Details

    • equals

      public boolean equals(Object obj)
      Two object value expressions are equal if and only if their wrapped objects are equal.
      Specified by:
      equals in class Expression
      Parameters:
      obj - the Object to test for equality.
      Returns:
      true if obj equals this Expression; false otherwise.

    • hashCode

      public int hashCode()
      Description copied from class: Expression
      Returns the hash code for this Expression. See the note in the Expression.equals(Object) method on how two expressions can be equal if their expression Strings are different. Recall that if two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result. Implementations must take special note and implement hashCode correctly.
      Specified by:
      hashCode in class Expression
      Returns:
      The hash code for this Expression.
      See Also:

    • getValue

      public Object getValue(ELContext context)
      Answer the wrapped object, coerced to the expected type.
      Specified by:
      getValue in class ValueExpression
      Parameters:
      context - The context of this evaluation.
      Returns:
      The result of the expression evaluation.

    • getExpressionString

      public String getExpressionString()
      Answer null.
      Specified by:
      getExpressionString in class Expression
      Returns:
      The original expression String.

    • isLiteralText

      public boolean isLiteralText()
      Answer false.
      Specified by:
      isLiteralText in class Expression
      Returns:
      true if this expression was created from only literal text; false otherwise.

    • getType

      public Class<?> getType(ELContext context)
      Answer null.
      Specified by:
      getType in class ValueExpression
      Parameters:
      context - The context of this evaluation.
      Returns:
      the most general acceptable type; otherwise undefined.

    • isReadOnly

      public boolean isReadOnly(ELContext context)
      Answer true.
      Specified by:
      isReadOnly in class ValueExpression
      Parameters:
      context - The context of this evaluation.
      Returns:
      true if the expression is read-only or false if not.

    • setValue

      public void setValue(ELContext context, Object value)
      Throw an exception.
      Specified by:
      setValue in class ValueExpression
      Parameters:
      context - The context of this evaluation.
      value - The new value to be set.

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • getExpectedType

      public Class<?> getExpectedType()
      Description copied from class: ValueExpression
      Returns the type the result of the expression will be coerced to after evaluation.
      Specified by:
      getExpectedType in class ValueExpression
      Returns:
      the expectedType passed to the ExpressionFactory.createValueExpression method that created this ValueExpression.