Uses of Class
org.datanucleus.query.expression.Expression

Packages that use Expression

Package	Description
org.datanucleus.query	This package provides general classes for querying across all datastores in particular languages.
org.datanucleus.query.compiler	Package handling the compilation of queries.
org.datanucleus.query.evaluator	Package providing the basis for evaluation of a string-based query.
org.datanucleus.query.evaluator.memory	Package providing the evaluation of in-memory queries.
org.datanucleus.query.expression	Package providing expressions from which a compiled query is made up.

Uses of Expression in org.datanucleus.query

Methods in org.datanucleus.query with parameters of type Expression

Modifier and Type	Method and Description
static boolean	QueryUtils.expressionHasNotOperator(Expression expr) Convenience method to return if there is a NOT operator in the expression.
static boolean	QueryUtils.expressionHasOrOperator(Expression expr) Convenience method to return if there is an OR operator in the expression.
static String	JDOQLQueryHelper.getJDOQLForExpression(Expression expr)
static String	JPQLQueryHelper.getJPQLForExpression(Expression expr) Convenience method to return the JPQL single-string query text for the provided expression.
static ParameterExpression	QueryUtils.getParameterExpressionForPosition(Expression rootExpr, int pos) Convenience method to return the ParameterExpression for the specified position if found in the expression tree starting at
static String	QueryUtils.getStringValueForExpression(Expression expr, Map parameters) Convenience method to get the String value for an Expression.
static List	QueryUtils.orderCandidates(List candidates, Expression[] ordering, Map state, String candidateAlias, ExecutionContext ec, ClassLoaderResolver clr, Map parameterValues, Imports imports, String queryLanguage) Convenience method to order the input List of objects to the ordering defined by the compilation.

Uses of Expression in org.datanucleus.query.compiler

Fields in org.datanucleus.query.compiler declared as Expression

Modifier and Type	Field and Description
protected Expression	QueryCompilation.exprFilter Compiled filter expression
protected Expression[]	QueryCompilation.exprFrom Compiled from expression.
protected Expression[]	QueryCompilation.exprGrouping Compiled grouping expression.
protected Expression	QueryCompilation.exprHaving Compiled having expression.
protected Expression[]	QueryCompilation.exprOrdering Compiled ordering expression.
protected Expression[]	QueryCompilation.exprResult Compiled result expression.
protected Expression[]	QueryCompilation.exprUpdate Compiled update expression.

Methods in org.datanucleus.query.compiler that return Expression

Modifier and Type	Method and Description
Expression	JavaQueryCompiler.compileFilter() Compile the filter and return the compiled expression.
protected Expression[]	JavaQueryCompiler.compileFrom() Method to compile the "from" clause (if present for the query language).
Expression[]	JavaQueryCompiler.compileGrouping()
Expression	JavaQueryCompiler.compileHaving()
Expression[]	JavaQueryCompiler.compileOrdering()
Expression[]	JavaQueryCompiler.compileResult()
Expression[]	JDOQLCompiler.compileUpdate()
Expression[]	JavaQueryCompiler.compileUpdate()
Expression	QueryCompilation.getExprFilter() Accessor for the filter expression.
Expression[]	QueryCompilation.getExprFrom() Accessor for any from expression(s).
Expression[]	QueryCompilation.getExprGrouping() Accessor for any grouping expression(s).
Expression	QueryCompilation.getExprHaving() Accessor for any having expression.
Expression[]	QueryCompilation.getExprOrdering() Accessor for any ordering expression(s).
Expression[]	QueryCompilation.getExprResult() Accessor for any result expression(s).
Expression[]	QueryCompilation.getExprUpdate() Accessor for any update expression(s).

Methods in org.datanucleus.query.compiler with parameters of type Expression

Modifier and Type	Method and Description
void	QueryCompilation.setExprFilter(Expression filter)
void	QueryCompilation.setExprHaving(Expression having)

Constructors in org.datanucleus.query.compiler with parameters of type Expression

Constructor and Description
QueryCompilation(Class candidateCls, String candidateAlias, SymbolTable symtbl, Expression[] results, Expression[] froms, Expression filter, Expression[] groupings, Expression having, Expression[] orderings, Expression[] updates)
QueryCompilation(Class candidateCls, String candidateAlias, SymbolTable symtbl, Expression[] results, Expression[] froms, Expression filter, Expression[] groupings, Expression having, Expression[] orderings, Expression[] updates)
QueryCompilation(Class candidateCls, String candidateAlias, SymbolTable symtbl, Expression[] results, Expression[] froms, Expression filter, Expression[] groupings, Expression having, Expression[] orderings, Expression[] updates)
QueryCompilation(Class candidateCls, String candidateAlias, SymbolTable symtbl, Expression[] results, Expression[] froms, Expression filter, Expression[] groupings, Expression having, Expression[] orderings, Expression[] updates)
QueryCompilation(Class candidateCls, String candidateAlias, SymbolTable symtbl, Expression[] results, Expression[] froms, Expression filter, Expression[] groupings, Expression having, Expression[] orderings, Expression[] updates)
QueryCompilation(Class candidateCls, String candidateAlias, SymbolTable symtbl, Expression[] results, Expression[] froms, Expression filter, Expression[] groupings, Expression having, Expression[] orderings, Expression[] updates)

Uses of Expression in org.datanucleus.query.evaluator

Methods in org.datanucleus.query.evaluator with parameters of type Expression

Modifier and Type	Method and Description
protected Object	AbstractExpressionEvaluator.compileAdditiveMultiplicativeExpression(Expression expr)
protected Object	AbstractExpressionEvaluator.compileOrAndExpression(Expression expr) This method deals with the OR/AND conditions.
protected Object	AbstractExpressionEvaluator.compilePrimaryExpression(Expression expr)
protected Object	AbstractExpressionEvaluator.compileRelationalExpression(Expression expr) Method to handle a relational expression comparing two expressions and returning a BooleanExpression.
protected Object	AbstractExpressionEvaluator.compileUnaryExpression(Expression expr)
Object	AbstractExpressionEvaluator.evaluate(Expression expr) Method to "evaluate" the expression.
Collection	AbstractResultClassMapper.map(Collection inputResults, Expression[] resultNames) Method to map the input results to the required result class type.
protected Object	AbstractExpressionEvaluator.processAddExpression(Expression expr) Method to process the supplied ADD expression.
protected Object	AbstractExpressionEvaluator.processAndExpression(Expression expr) Method to process the supplied AND expression.
protected Object	AbstractExpressionEvaluator.processCastExpression(Expression expr) Method to process the supplied cast expression.
protected Object	AbstractExpressionEvaluator.processComExpression(Expression expr) Method to process the supplied COM expression.
protected Object	AbstractExpressionEvaluator.processDistinctExpression(Expression expr) Method to process the supplied DISTINCT expression.
protected Object	AbstractExpressionEvaluator.processDivExpression(Expression expr) Method to process the supplied DIV expression.
protected Object	AbstractExpressionEvaluator.processEqExpression(Expression expr) Method to process the supplied EQ expression.
protected Object	AbstractExpressionEvaluator.processGteqExpression(Expression expr) Method to process the supplied GTEQ expression.
protected Object	AbstractExpressionEvaluator.processGtExpression(Expression expr) Method to process the supplied GT expression.
protected Object	AbstractExpressionEvaluator.processInExpression(Expression expr) Method to process the supplied IN expression.
protected Object	AbstractExpressionEvaluator.processIsExpression(Expression expr) Method to process the supplied IS (instanceof) expression.
protected Object	AbstractExpressionEvaluator.processIsnotExpression(Expression expr) Method to process the supplied ISNOT (!instanceof) expression.
protected Object	AbstractExpressionEvaluator.processLikeExpression(Expression expr) Method to process the supplied LIKE expression.
protected Object	AbstractExpressionEvaluator.processLteqExpression(Expression expr) Method to process the supplied LTEQ expression.
protected Object	AbstractExpressionEvaluator.processLtExpression(Expression expr) Method to process the supplied LT expression.
protected Object	AbstractExpressionEvaluator.processModExpression(Expression expr) Method to process the supplied MOD expression.
protected Object	AbstractExpressionEvaluator.processMulExpression(Expression expr) Method to process the supplied MUL expression.
protected Object	AbstractExpressionEvaluator.processNegExpression(Expression expr) Method to process the supplied NEG expression.
protected Object	AbstractExpressionEvaluator.processNoteqExpression(Expression expr) Method to process the supplied NOTEQ expression.
protected Object	AbstractExpressionEvaluator.processNotExpression(Expression expr) Method to process the supplied NOT expression.
protected Object	AbstractExpressionEvaluator.processNotInExpression(Expression expr) Method to process the supplied NOT IN expression.
protected Object	AbstractExpressionEvaluator.processOrExpression(Expression expr) Method to process the supplied OR expression.
protected Object	AbstractExpressionEvaluator.processSubExpression(Expression expr) Method to process the supplied SUB expression.

Uses of Expression in org.datanucleus.query.evaluator.memory

Methods in org.datanucleus.query.evaluator.memory with parameters of type Expression

Modifier and Type	Method and Description
Object	SetExpression.avg(Expression paramExpr, ExpressionEvaluator eval, Map<String,Object> state)
Object	SetExpression.count(Expression expr, ExpressionEvaluator eval)
protected Object	NullIfFunctionEvaluator.getValueForArgExpression(Expression argExpr, InMemoryExpressionEvaluator eval)
protected Object	CoalesceFunctionEvaluator.getValueForArgExpression(Expression argExpr, InMemoryExpressionEvaluator eval)
Object	SetExpression.max(Expression paramExpr, ExpressionEvaluator eval, Map<String,Object> state)
Object	SetExpression.min(Expression paramExpr, ExpressionEvaluator eval, Map<String,Object> state)
protected Object	InMemoryExpressionEvaluator.processAddExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processAndExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processCastExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processComExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processDivExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processEqExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processGteqExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processGtExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processIsExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processIsnotExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processLikeExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processLteqExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processLtExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processModExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processMulExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processNegExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processNoteqExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processNotExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processOrExpression(Expression expr)
protected Object	InMemoryExpressionEvaluator.processSubExpression(Expression expr)
Object	SetExpression.sum(Expression paramExpr, ExpressionEvaluator eval, Map<String,Object> state)

Uses of Expression in org.datanucleus.query.expression

Subclasses of Expression in org.datanucleus.query.expression

Modifier and Type	Class and Description
class	ArrayExpression Expression representing an input array of expressions (or at least some of the array is of expressions).
class	CaseExpression Expression representing a case series of when expressions and their action expressions.
class	ClassExpression Expression representing a candidate in a FROM clause.
class	CreatorExpression Expression representing something like "new X.Y.Z([param1[,param2[,param3]]])".
class	DyadicExpression Expression between two other expressions and an operation.
class	InvokeExpression Expression representing invocation of a method.
class	JoinExpression Expression representing a join between a candidate class, and the class of a field of the first class.
class	Literal Literal of some type (String, Double, Long, BigDecimal, etc).
class	OrderExpression Expression as part of an ordering clause.
class	ParameterExpression Expression representing a parameter.
class	PrimaryExpression Expression for a primary object.
class	SubqueryExpression Expression containing a subquery.
class	VariableExpression Expression representing a variable.

Fields in org.datanucleus.query.expression declared as Expression

Modifier and Type	Field and Description
protected Expression	Expression.left
protected Expression	Expression.parent Parent of this expression in the tree (if any).
protected Expression	Expression.right

Methods in org.datanucleus.query.expression that return Expression

Modifier and Type	Method and Description
Expression	ExpressionCompiler.compileExpression(Node node) Primary entry point for compiling a node for the filter, grouping, having, result clauses.
Expression	ExpressionCompiler.compileFromExpression(Node node, boolean classIsExpression) Primary entry point for compiling a node for the from clause.
Expression	ExpressionCompiler.compileOrderExpression(Node node) Primary entry point for compiling a node for the order clause.
Expression	ArrayExpression.getElement(int index) Accessor for an element of the array.
Expression	CaseExpression.getElseExpression()
Expression	Expression.getLeft() Accessor for the left hand expression.
Expression	Expression.getParent() Accessor for the parent expression where this expression is access from.
Expression	Expression.getRight() Accessor for the right hand expression.

Methods in org.datanucleus.query.expression that return types with arguments of type Expression

Modifier and Type	Method and Description
List<Expression>	InvokeExpression.getArguments() Accessor for any arguments to be passed in the invocation.
List<Expression>	CreatorExpression.getArguments() Accessor for the arguments to use in the creation call.
Map<Expression,Expression>	CaseExpression.getConditions()
Map<Expression,Expression>	CaseExpression.getConditions()

Methods in org.datanucleus.query.expression with parameters of type Expression

Modifier and Type	Method and Description
void	CaseExpression.addCondition(Expression whenExpr, Expression actionExpr)
Object	ExpressionEvaluator.evaluate(Expression expr) Method to evaluate the provided expression.
void	Expression.setLeft(Expression expr)
void	Expression.setRight(Expression expr)

Constructors in org.datanucleus.query.expression with parameters of type Expression

Constructor and Description
ArrayExpression(Expression[] elements)
CaseExpression(Expression elseExpr)
DyadicExpression(Expression.MonadicOperator op, Expression operand) Perform a function op on operand
DyadicExpression(Expression operand1, Expression.DyadicOperator op, Expression operand2) Performs a function on two arguments.
Expression(Expression.MonadicOperator op, Expression operand) Perform a function op on operand
Expression(Expression operand1, Expression.DyadicOperator op, Expression operand2) Performs a function on two arguments.
InvokeExpression(Expression invoked, String methodName, List args) Constructor for an expression for the invocation of a method/function.
OrderExpression(Expression expr)
OrderExpression(Expression expr, String sortOrder) Constructor.
OrderExpression(Expression expr, String sortOrder, String nullOrder) Constructor.
PrimaryExpression(Expression left, List<String> tuples) PrimaryExpression on an expression.