Method Detail

• acceptChildren

  public void acceptChildren​(ExpressionVisitor visitor)

  Visits the children of this Expression. This method can be used to optimize traversing the children since a new list is not created every time Expression.children() is called.

  This does not traverse the Expression sub-hierarchy, use a subclass of AbstractTraverseChildrenVisitor in order to traverse the entire sub-hierarchy.

  Parameters:

  visitor - The visitor to visit the children of this object.

• findQueryBNF

  public JPQLQueryBNF findQueryBNF​(Expression expression)

  Retrieves the JPQLQueryBNF that represents the fragment of this Expression that was used when parsing the given Expression.

  Specified by:

  findQueryBNF in interface Expression

  Overrides:

  findQueryBNF in class AbstractExpression

  Parameters:

  expression - The Expression that is a descendant of this one

  Returns:

  The JPQLQueryBNF that was used to parse the given expression

• getEncapsulatedExpressionQueryBNFId

  public abstract String getEncapsulatedExpressionQueryBNFId()

  Returns the BNF used to parse the encapsulated expression.

  Returns:

  The BNF used to parse the encapsulated expression

• getExpression

  public final Expression getExpression()

  Returns the Expression that is encapsulated within parenthesis.

  Returns:

  The Expression that is encapsulated within parenthesis

• hasEncapsulatedExpression

  public boolean hasEncapsulatedExpression()

  Determines whether something was parsed after the left parenthesis.

  Specified by:

  hasEncapsulatedExpression in class AbstractEncapsulatedExpression

  Returns:

  true if something was parsed; false otherwise

• hasExpression

  public final boolean hasExpression()

  Determines whether the encapsulated expression of the query was parsed.

  Returns:

  true if the encapsulated expression was parsed; false if it was not parsed

• setExpression

  public final void setExpression​(AbstractExpression expression)

  Manually sets the encapsulated Expression to become the given one.

  Parameters:

  expression - The new encapsulated Expression, which cannot be null

  Throws:

  NullPointerException - The given AbstractExpression cannot be null