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Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) E28847-01 |
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java.lang.Object
org.eclipse.persistence.jpa.internal.jpql.parser.StringExpression
org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression
org.eclipse.persistence.jpa.internal.jpql.parser.ArithmeticFactor
public final class ArithmeticFactor
This expression simply adds a plus or minus sign to the arithmetic primary expression.
arithmetic_factor ::= [{+|-}] arithmetic_primary
Field Summary | |
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private AbstractExpression |
expression The Expression representing the arithmetic primary. |
Fields inherited from class org.eclipse.persistence.jpa.internal.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 |
Constructor Summary | |
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ArithmeticFactor(AbstractExpression parent, java.lang.String arithmeticFactor) Creates a new ArithmeticFactor . |
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 . |
(package private) void |
addChildrenTo(java.util.Collection<Expression> children) Adds the children of this Expression to the given collection. |
(package private) void |
addOrderedChildrenTo(java.util.List<StringExpression> children) Adds the StringExpressions representing this Expression . |
Expression |
getExpression() Returns the Expression representing the arithmetic primary. |
JPQLQueryBNF |
getQueryBNF() Returns the BNF of this Expression . |
(package private) boolean |
handleAggregate(JPQLQueryBNF queryBNF) Determines whether the given JPQLQueryBNF handles aggregate expressions. |
boolean |
hasExpression() Determines whether the arithmetic primary was parsed. |
boolean |
hasMinusSign() Determines if the arithmetic primary is prepended with the minus sign. |
boolean |
hasPlusSign() Determines if the arithmetic primary is prepended with the plus sign. |
(package private) boolean |
isParsingComplete(WordParser wordParser, java.lang.String word, Expression expression) Determines whether the parsing is complete based on what is left in the given text. |
(package private) void |
parse(WordParser wordParser, boolean tolerant) Parses the query by starting at the current position, which is part of the given WordParser . |
(package private) void |
toParsedText(java.lang.StringBuilder writer, boolean includeVirtual) Generates a string representation of this Expression . |
Methods inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression |
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buildExpressionFromFallingBack, buildNullExpression, buildStringExpression, buildStringExpression, buildUnknownExpression, children, expressionFactory, expressionFactoryForIdentifier, findQueryBNF, getChildren, getJPAVersion, getParent, getRoot, getText, identifierRole, identifiers, identifiers, identifierVersion, isAncestor, isIdentifier, isNull, isTolerant, isUnknown, isVirtual, orderedChildren, parse, parseSingleExpression, populatePosition, queryBNF, readdLeadingSpaces, rebuildActualText, rebuildParsedText, setParent, setText, shouldParseWithFactoryFirst, shouldSkipLiteral, toActualText, toParsedText, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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private AbstractExpression expression
Expression
representing the arithmetic primary.Constructor Detail |
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ArithmeticFactor(AbstractExpression parent, java.lang.String arithmeticFactor)
ArithmeticFactor
.
parent
- The parent of this expressionarithmeticFactor
- The arithmetic factor, which is either '+' or '-'Method Detail |
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public void accept(ExpressionVisitor visitor)
Expression
by the given visitor
.visitor
- The visitor
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()
or Expression.getChildren()
is called.
This does not traverse the Expression
sub-hierarchy, use an subclass of AbstractTraverseChildrenVisitor
in order to traverse the entire sub-hierarchy.
visitor
- The visitor
to visit the children of this object.void addChildrenTo(java.util.Collection<Expression> children)
Expression
to the given collection.addChildrenTo
in class AbstractExpression
children
- The collection used to store the childrenvoid addOrderedChildrenTo(java.util.List<StringExpression> children)
StringExpressions
representing this Expression
.addOrderedChildrenTo
in class AbstractExpression
children
- The list used to store the string representation of this Expression
public Expression getExpression()
Expression
representing the arithmetic primary.public JPQLQueryBNF getQueryBNF()
Expression
.getQueryBNF
in class AbstractExpression
JPQLQueryBNF
, which represents the grammar of this Expression
boolean handleAggregate(JPQLQueryBNF queryBNF)
JPQLQueryBNF
handles aggregate expressions.handleAggregate
in class AbstractExpression
queryBNF
- The JPQLQueryBNF
used to determine if the parsing should handle aggregate expressionstrue
if the given BNF handles aggregate expressions; false
otherwisepublic boolean hasExpression()
true
the arithmetic primary was parsed; false
if nothing was parsedpublic boolean hasMinusSign()
true
if the expression is prepended with '-'; false
otherwisepublic boolean hasPlusSign()
true
if the expression is prepended with '+'; false
otherwiseboolean isParsingComplete(WordParser wordParser, java.lang.String word, Expression expression)
isParsingComplete
in class AbstractExpression
wordParser
- The text to parse based on the current position of the cursorword
- The word that was retrieved from the given text, which is the first word in the textexpression
- The Expression
that has already been parsedtrue
if the text no longer can't be parsed by the current expression; false
if more can be parsedvoid 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 queriesvoid toParsedText(java.lang.StringBuilder writer, boolean includeVirtual)
Expression
.toParsedText
in class AbstractExpression
writer
- The buffer used to append this Expression
's string representationincludeVirtual
- Determines whether to include any characters that are considered virtual, i.e. that was parsed when the query is incomplete and is needed for functionality like content assist
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