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java.lang.Objectorg.eclipse.persistence.jpa.jpql.parser.AbstractExpression
org.eclipse.persistence.jpa.jpql.parser.DefaultStringExpression
public final class DefaultStringExpression
An implementation of an Expression
that wraps a string.
Field Summary |
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Fields inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractExpression |
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COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE |
Method Summary | |
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void |
accept(ExpressionVisitor visitor)
Visits this Expression by the given visitor . |
void |
acceptChildren(ExpressionVisitor visitor)
Visits the children of this Expression . |
JPQLQueryBNF |
getQueryBNF()
Returns the BNF of this Expression . |
protected void |
parse(WordParser wordParser,
boolean tolerant)
Parses the query by starting at the current position, which is part of the given WordParser . |
void |
populatePosition(QueryPosition queryPosition,
int position)
Retrieves the Expression located at the given position using the actual query,
which may have extra whitespace. |
protected void |
toParsedText(java.lang.StringBuilder writer,
boolean actual)
Generates a string representation of this Expression , including its children,
if it has any. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Method Detail |
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public void accept(ExpressionVisitor visitor)
Expression
by the given visitor
.
visitor
- The ExpressionVisitor
to visit this objectpublic void acceptChildren(ExpressionVisitor visitor)
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.
visitor
- The visitor
to visit the children of this object.public JPQLQueryBNF getQueryBNF()
Expression
.
JPQLQueryBNF
, which represents the grammar of this Expression
protected void parse(WordParser wordParser, boolean tolerant)
WordParser
.
parse
in class AbstractExpression
wordParser
- The text to parse based on the current position of the cursortolerant
- Determines whether the parsing system should be tolerant, meaning if it should
try to parse invalid or incomplete queriespublic void populatePosition(QueryPosition queryPosition, int position)
Expression
located at the given position using the actual query,
which may have extra whitespace.
populatePosition
in interface Expression
populatePosition
in class AbstractExpression
position
- The array has one element and is the position of the Expression
to retrieveprotected void toParsedText(java.lang.StringBuilder writer, boolean actual)
Expression
, including its children,
if it has any.
toParsedText
in class AbstractExpression
writer
- The buffer used to append this Expression
's string representationactual
- Determines whether the string representation should represent what was parsed,
i.e. include any "virtual" whitespace (such as ending whitespace) and the actual case of the
JPQL identifiers
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