org.eclipse.persistence.jpa.jpql.parser

Class BetweenExpression

java.lang.Object

org.eclipse.persistence.jpa.jpql.parser.AbstractExpression

org.eclipse.persistence.jpa.jpql.parser.BetweenExpression

All Implemented Interfaces:

Expression

public final class BetweenExpression
extends AbstractExpression

Used in conditional expression to determine whether the result of an expression falls within an inclusive range of values. Numeric, string and date expression can be evaluated in this way.

BNF: between_expression ::= arithmetic_expression [NOT] BETWEEN arithmetic_expression AND arithmetic_expression |
string_expression [NOT] BETWEEN string_expression AND string_expression |
datetime_expression [NOT] BETWEEN datetime_expression AND datetime_expression

Version:

2.5

Author:

Pascal Filion

Since:

2.3

Field Summary

Fields inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractExpression

COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE

Fields inherited from interface org.eclipse.persistence.jpa.jpql.parser.Expression

ABS, ALL, AND, ANY, AS, AS_OF, ASC, AVG, BETWEEN, BIT_LENGTH, BOTH, CASE, CAST, CHAR_LENGTH, CHARACTER_LENGTH, CLASS, COALESCE, COLUMN, CONCAT, CONNECT_BY, COUNT, CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP, DELETE, DELETE_FROM, DESC, DIFFERENT, DISTINCT, DIVISION, ELSE, EMPTY, END, ENTRY, EQUAL, ESCAPE, EXCEPT, EXISTS, EXTRACT, FALSE, FETCH, FIRST, FROM, FUNC, FUNCTION, GREATER_THAN, GREATER_THAN_OR_EQUAL, GROUP_BY, HAVING, IN, INDEX, INNER, INNER_JOIN, INNER_JOIN_FETCH, INTERSECT, IS, IS_EMPTY, IS_NOT_EMPTY, IS_NOT_NULL, IS_NULL, JOIN, JOIN_FETCH, KEY, LAST, LEADING, LEFT, LEFT_JOIN, LEFT_JOIN_FETCH, LEFT_OUTER_JOIN, LEFT_OUTER_JOIN_FETCH, LENGTH, LIKE, LOCATE, LOWER, LOWER_THAN, LOWER_THAN_OR_EQUAL, MAX, MEMBER, MEMBER_OF, MIN, MINUS, MOD, MULTIPLICATION, NAMED_PARAMETER, NEW, NOT, NOT_BETWEEN, NOT_EQUAL, NOT_EXISTS, NOT_IN, NOT_LIKE, NOT_MEMBER, NOT_MEMBER_OF, NULL, NULLIF, NULLS, NULLS_FIRST, NULLS_LAST, OBJECT, OF, ON, OPERATOR, OR, ORDER_BY, ORDER_SIBLINGS_BY, OUTER, PLUS, POSITION, POSITIONAL_PARAMETER, QUOTE, REGEXP, SCN, SELECT, SET, SIZE, SOME, SQL, SQRT, START_WITH, SUBSTRING, SUM, TABLE, THEN, TIMESTAMP, TRAILING, TREAT, TRIM, TRUE, TYPE, UNION, UNKNOWN, UPDATE, UPPER, VALUE, WHEN, WHERE

Constructor Summary

Constructors

Constructor and Description
BetweenExpression(AbstractExpression parent, AbstractExpression expression) Creates a new BetweenExpression.

Method Summary

Modifier and Type	Method and Description
void	accept(ExpressionVisitor visitor) Visits this Expression by the given visitor.
void	acceptChildren(ExpressionVisitor visitor) Visits the children of this Expression.
protected void	addChildrenTo(java.util.Collection<Expression> children) Adds the children of this AbstractExpression to the given collection.
protected void	addOrderedChildrenTo(java.util.List<Expression> children) Adds the children of this AbstractExpression to the given list.
JPQLQueryBNF	findQueryBNF(Expression expression) Retrieves the JPQLQueryBNF that represents the fragment of this Expression that was used when parsing the given Expression.
java.lang.String	getActualAndIdentifier() Returns the actual AND identifier found in the string representation of the JPQL query, which has the actual case that was used.
java.lang.String	getActualBetweenIdentifier() Returns the actual identifier found in the string representation of the JPQL query, which has the actual case that was used.
java.lang.String	getActualNotIdentifier() Returns the actual NOT identifier found in the string representation of the JPQL query, which has the actual case that was used.
java.lang.String	getBoundExpressionQueryBNFId() Returns the unique identifier of the BNF for the lower and upper bound expressions.
Expression	getExpression() Returns the Expression representing the expression to be tested for a range of values.
java.lang.String	getIdentifier() Returns the identifier for this expression that may include NOT if it was parsed.
Expression	getLowerBoundExpression() Returns the Expression representing the lower bound expression.
JPQLQueryBNF	getQueryBNF() Returns the BNF of this Expression.
Expression	getUpperBoundExpression() Returns the Expression representing the upper bound expression.
boolean	hasAnd() Determines whether the identifier AND was part of the query.
protected boolean	hasBetween() Determines whether the identifier BETWEEN was part of the query.
boolean	hasExpression() Determines whether the expression before the identifier was parsed.
boolean	hasLowerBoundExpression() Determines whether the lower bound expression was parsed.
boolean	hasNot() Determines whether the identifier NOT was part of the query.
boolean	hasSpaceAfterAnd() Determines whether a whitespace was found after AND.
boolean	hasSpaceAfterBetween() Determines whether a whitespace was found after BETWEEN.
boolean	hasSpaceAfterLowerBound() Determines whether a whitespace was found after the lower bound expression.
boolean	hasUpperBoundExpression() Determines whether the upper bound expression was parsed.
protected 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.
protected void	parse(WordParser wordParser, boolean tolerant) Parses the query by starting at the current position, which is part of the given WordParser.
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 org.eclipse.persistence.jpa.jpql.parser.AbstractExpression

acceptUnknownVisitor, acceptUnknownVisitor, buildExpressionFromFallingBack, buildNullExpression, buildStringExpression, buildStringExpression, buildUnknownExpression, calculatePosition, children, findFallBackExpressionFactory, getExpressionFactory, getExpressionRegistry, getGrammar, getIdentifierVersion, getJPAVersion, getLength, getOffset, getParent, getQueryBNF, getRoot, getText, handleAggregate, handleCollection, isAncestor, isIdentifier, isNull, isTolerant, isUnknown, isVirtual, orderedChildren, parse, parseUsingExpressionFactory, populatePosition, rebuildActualText, rebuildParsedText, setParent, setText, shouldParseWithFactoryFirst, shouldSkipLiteral, toActualText, toParsedText, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BetweenExpression

public BetweenExpression(AbstractExpression parent,
                         AbstractExpression expression)

Creates a new BetweenExpression.

Parameters:

parent - The parent of this expression

expression - The Expression that is tested to be inclusive in a range of values

Method Detail

accept

public void accept(ExpressionVisitor visitor)

Visits this Expression by the given visitor.

Parameters:

visitor - The ExpressionVisitor to visit this object

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.

addChildrenTo

protected void addChildrenTo(java.util.Collection<Expression> children)

Adds the children of this AbstractExpression to the given collection.

Overrides:

addChildrenTo in class AbstractExpression

Parameters:

children - The collection used to store the children

addOrderedChildrenTo

protected void addOrderedChildrenTo(java.util.List<Expression> children)

Adds the children of this AbstractExpression to the given list.

Overrides:

addOrderedChildrenTo in class AbstractExpression

Parameters:

children - The list used to store the string representation of this AbstractExpression

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

getActualAndIdentifier

public java.lang.String getActualAndIdentifier()

Returns the actual AND identifier found in the string representation of the JPQL query, which has the actual case that was used.

Returns:

The AND identifier that was actually parsed, or an empty string if it was not parsed

getActualBetweenIdentifier

public java.lang.String getActualBetweenIdentifier()

Returns the actual identifier found in the string representation of the JPQL query, which has the actual case that was used.

Returns:

The identifier that was actually parsed

getActualNotIdentifier

public java.lang.String getActualNotIdentifier()

Returns the actual NOT identifier found in the string representation of the JPQL query, which has the actual case that was used.

Returns:

The NOT identifier that was actually parsed, or an empty string if it was not parsed

getBoundExpressionQueryBNFId

public java.lang.String getBoundExpressionQueryBNFId()

Returns the unique identifier of the BNF for the lower and upper bound expressions.

Returns:

The unique identifier of the JPQL query BNF for the lower and upper bound expressions

getExpression

public Expression getExpression()

Returns the Expression representing the expression to be tested for a range of values.

Returns:

The expression that was parsed representing the expression to be tested

getIdentifier

public java.lang.String getIdentifier()

Returns the identifier for this expression that may include NOT if it was parsed.

Returns:

Either BETWEEN or NOT BETWEEN

getLowerBoundExpression

public Expression getLowerBoundExpression()

Returns the Expression representing the lower bound expression.

Returns:

The expression that was parsed representing the lower bound expression

getQueryBNF

public JPQLQueryBNF getQueryBNF()

Returns the BNF of this Expression.

Returns:

The JPQLQueryBNF, which represents the grammar of this Expression

getUpperBoundExpression

public Expression getUpperBoundExpression()

Returns the Expression representing the upper bound expression.

Returns:

The expression that was parsed representing the upper bound expression

hasAnd

public boolean hasAnd()

Determines whether the identifier AND was part of the query.

Returns:

true if the identifier AND was parsed; false otherwise

hasBetween

protected boolean hasBetween()

Determines whether the identifier BETWEEN was part of the query.

Returns:

true if the identifier BETWEEN was parsed; false otherwise

hasExpression

public boolean hasExpression()

Determines whether the expression before the identifier was parsed.

Returns:

true if the query has the expression before BETWEEN; false otherwise

hasLowerBoundExpression

public boolean hasLowerBoundExpression()

Determines whether the lower bound expression was parsed.

Returns:

true if the query has the lower bound expression; false otherwise

hasNot

public boolean hasNot()

Determines whether the identifier NOT was part of the query.

Returns:

true if the identifier NOT was parsed; false otherwise

hasSpaceAfterAnd

public boolean hasSpaceAfterAnd()

Determines whether a whitespace was found after AND.

Returns:

true if there was a whitespace after AND; false otherwise

hasSpaceAfterBetween

public boolean hasSpaceAfterBetween()

Determines whether a whitespace was found after BETWEEN.

Returns:

true if there was a whitespace after the BETWEEN; false otherwise

hasSpaceAfterLowerBound

public boolean hasSpaceAfterLowerBound()

Determines whether a whitespace was found after the lower bound expression.

Returns:

true if there was a whitespace after the lower bound expression; false otherwise

hasUpperBoundExpression

public boolean hasUpperBoundExpression()

Determines whether the upper bound expression was parsed.

Returns:

true if the query has the upper bound expression; false otherwise

isParsingComplete

protected 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. The text is never empty.

Overrides:

isParsingComplete in class AbstractExpression

Parameters:

wordParser - The text to parse based on the current position of the cursor

word - The word that was retrieved from the given text, which is the first word in the text

expression - The Expression that has already been parsed

Returns:

true if the text no longer can't be parsed by the current expression; false if more can be parsed

parse

protected void parse(WordParser wordParser,
                     boolean tolerant)

Parses the query by starting at the current position, which is part of the given WordParser.

Specified by:

parse in class AbstractExpression

Parameters:

wordParser - The text to parse based on the current position of the cursor

tolerant - Determines whether the parsing system should be tolerant, meaning if it should try to parse invalid or incomplete queries

toParsedText

protected void toParsedText(java.lang.StringBuilder writer,
                            boolean actual)

Generates a string representation of this Expression, including its children, if it has any.

Specified by:

toParsedText in class AbstractExpression

Parameters:

writer - The buffer used to append this Expression's string representation

actual - 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