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java.lang.Objectorg.eclipse.persistence.jpa.jpql.parser.AbstractExpression
org.eclipse.persistence.jpa.jpql.parser.RegexpExpression
public final class RegexpExpression
The REGEXP condition is used to specify a search for a pattern. It is not part of JPA 2.0/2.1, only EclipseLink. It is supported by many databases (Oracle, MySQL, PostgreSQL), I think part of SQL 2008, replacing SIMILAR TO.
The string_expression must have a string value. The pattern_value is a
string literal or a string-valued input parameter that is a regular expression.
regexp_expression ::= string_expression REGEXP pattern_value
| Field Summary |
|---|
| 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 |
| Constructor Summary | |
|---|---|
RegexpExpression(AbstractExpression parent,
AbstractExpression stringExpression)
Creates a new LikeExpression. |
|
| Method Summary | |
|---|---|
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. |
java.lang.String |
getActualRegexpIdentifier()
Returns the actual REGEXP found in the string representation of the JPQL query, which has the actual case that was used. |
Expression |
getPatternValue()
Returns the Expression that represents the pattern value. |
JPQLQueryBNF |
getQueryBNF()
Returns the BNF of this Expression. |
Expression |
getStringExpression()
Returns the Expression that represents the string expression. |
boolean |
hasPatternValue()
Determines whether the pattern value was parsed. |
boolean |
hasSpaceAfterIdentifier()
Determines whether a whitespace was parsed after REGEXP. |
boolean |
hasSpaceAfterStringExpression()
Determines whether a whitespace was parsed after the string expression. |
boolean |
hasStringExpression()
Determines whether the string 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 java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
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public RegexpExpression(AbstractExpression parent, AbstractExpression stringExpression)
LikeExpression.
parent - The parent of this expressionstringExpression - The first part of this expression, which is the string expression| Method Detail |
|---|
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.protected void addChildrenTo(java.util.Collection<Expression> children)
AbstractExpression to the given collection.
addChildrenTo in class AbstractExpressionchildren - The collection used to store the childrenprotected void addOrderedChildrenTo(java.util.List<Expression> children)
AbstractExpression to the given list.
addOrderedChildrenTo in class AbstractExpressionchildren - The list used to store the string representation of this AbstractExpressionpublic java.lang.String getActualRegexpIdentifier()
public Expression getPatternValue()
Expression that represents the pattern value.
public JPQLQueryBNF getQueryBNF()
Expression.
JPQLQueryBNF, which represents the grammar of this Expressionpublic Expression getStringExpression()
Expression that represents the string expression.
public boolean hasPatternValue()
true if the pattern value was parsed; false otherwisepublic boolean hasSpaceAfterIdentifier()
true if there was a whitespace after REGEXP; false
otherwisepublic boolean hasSpaceAfterStringExpression()
true if there was a whitespace after the string expression;
false otherwisepublic boolean hasStringExpression()
true if the string expression was parsed; false otherwiseprotected boolean isParsingComplete(WordParser wordParser, java.lang.String word, Expression expression)
isParsingComplete in class AbstractExpressionwordParser - 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 parsed
true if the text no longer can't be parsed by the current expression;
false if more can be parsedprotected void parse(WordParser wordParser, boolean tolerant)
WordParser.
parse in class AbstractExpressionwordParser - 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 queries
protected void toParsedText(java.lang.StringBuilder writer,
boolean actual)
Expression, including its children,
if it has any.
toParsedText in class AbstractExpressionwriter - 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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EclipseLink 2.4.1, build 'v20121003-ad44345' API Reference | ||||||||
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