类的使用
org.josql.expressions.Expression

使用Expression的程序包

程序包	说明
org.josql
org.josql.expressions
org.josql.functions
org.josql.internal
org.josql.parser

org.josql中Expression的使用

返回Expression的org.josql中的方法

限定符和类型	方法和说明
Expression	Query.getFrom()
Expression	Query.getHavingClause() Return the HAVING clause expression.
Expression	Query.getWhereClause() Return the WHERE clause expression.

参数类型为Expression的org.josql中的方法

限定符和类型	方法和说明
void	Query.setFrom(Expression exp)
void	Query.setHaving(Expression be) Set the expression for the HAVING clause.
void	Query.setWhere(Expression be) Set the expression for the WHERE clause.

org.josql.expressions中Expression的使用

org.josql.expressions中Expression的子类

限定符和类型	类和说明
class	Accessor
class	AliasedExpression Represents an expression that also has an alias.
class	AliasedFunction A function that also has an alias.
class	AndOrExpression
class	ArithmeticExpression
class	BetweenExpression Represents a "BETWEEN x AND y" expression.
class	BinaryExpression
class	BindVariable
class	BooleanExpression
class	ConstantExpression
class	EqualsExpression This class represents an "=" or "!
class	ExpressionList
class	Function This class represents a Function that can be "called" in JoSQL.
class	GTLTExpression
class	InExpression
class	IsNullExpression Represents an "IS NULL" (or "IS NOT NULL") expression.
class	LikeExpression
class	NewObjectExpression
class	SaveValue
class	SelectItemExpression
class	SubQueryExpression
class	ValueExpression

声明为Expression的org.josql.expressions中的字段

限定符和类型	字段和说明
protected Expression	AliasedExpression.exp
protected Expression	BinaryExpression.left
protected Expression	BinaryExpression.right

返回Expression的org.josql.expressions中的方法

限定符和类型	方法和说明
Expression	BetweenExpression.getEnd() Get the end expression.
Expression	SelectItemExpression.getExpression()
Expression	AliasedExpression.getExpression() Get the expression being aliased.
Expression	BinaryExpression.getLeft() Get the LHS.
Expression	BinaryExpression.getRight() Get the RHS.
Expression	BetweenExpression.getStart() Get the start expression.

参数类型为Expression的org.josql.expressions中的方法

限定符和类型	方法和说明
void	ExpressionList.addExpression(Expression expr) Add an expression to the list.
void	NewObjectExpression.addIntoExpression(Expression exp, String setter)
void	InExpression.addItem(Expression e)
void	SelectItemExpression.setExpression(Expression exp)
void	AliasedExpression.setExpression(Expression exp)
void	BinaryExpression.setLeft(Expression exp)
void	BinaryExpression.setRight(Expression exp)

org.josql.functions中Expression的使用

参数类型为Expression的org.josql.functions中的方法

限定符和类型	方法和说明
Object	MiscellaneousFunctions.accessor(Expression oExp, Expression accExp) Call the specified accessor on the object.
Double	GroupingFunctions.avg(Expression exp)
Double	GroupingFunctions.avg(List allobjs, Expression exp)
Double	GroupingFunctions.avg(List allobjs, Expression exp, String saveValueName)
void	MiscellaneousFunctions.cache(List allobjs, Expression exp)
void	GroupingFunctions.checkType(Object o, Class expected, Expression exp)
List	CollectionFunctions.collect(Expression exp)
List	CollectionFunctions.collect(List allobjs, Expression exp)
List	CollectionFunctions.collect(List objs, Expression exp, String saveValueName)
String	GroupingFunctions.concat(Expression exp)
String	GroupingFunctions.concat(List allobjs, Expression exp)
String	GroupingFunctions.concat(List allobjs, Expression exp, String sep)
String	GroupingFunctions.concat(List allobjs, Expression exp, String sep, String saveValueName)
int	CollectionFunctions.count(Expression exp)
int	CollectionFunctions.count(List allobjs, Expression exp)
int	CollectionFunctions.count(List objs, Expression exp, Object value)
Object	MiscellaneousFunctions.eval(Expression exp)
List	CollectionFunctions.find(List objs, Expression exp)
List	CollectionFunctions.foreach(Expression exp)
List	CollectionFunctions.foreach(Expression listFunction, Expression exp)
List	CollectionFunctions.foreach(List allobjs, Expression exp)
Object	CollectionFunctions.get(Map m, Expression exp) Get a value from the specified Map.
Object	GroupingFunctions.greatest(List allobjs, Expression exp)
Object	GroupingFunctions.greatest(List allobjs, Expression exp, String saveValueName)
Object	GroupingFunctions.greatestObject(List allobjs, Expression exp)
Map	CollectionFunctions.grp(List objs, Expression exp) Group objects from the List based upon the expression passed in.
Object	MiscellaneousFunctions.ifThen(Expression ifcond, Expression thenVal)
Object	MiscellaneousFunctions.ifThenElse(Expression ifcond, Expression thenVal, Expression elseVal)
Boolean	MiscellaneousFunctions.instanceOf(Expression obj, Expression clazz)
Object	GroupingFunctions.least(List allobjs, Expression exp)
Object	GroupingFunctions.least(List allobjs, Expression exp, String saveValueName)
Object	GroupingFunctions.leastObject(List allobjs, Expression exp)
Map	CollectionFunctions.map(List objs, Expression exp) Create a map of the objects passed in, the key will be the object in the list and the value will be the result of calling the expression on the object.
Map	CollectionFunctions.map(List objs, Expression keyExp, Expression valExp)
Object	GroupingFunctions.max(Expression exp)
Object	GroupingFunctions.max(List allobjs, Expression exp)
Object	GroupingFunctions.max(List allobjs, Expression exp, String saveValueName)
Object	GroupingFunctions.maxObject(Expression exp)
Object	GroupingFunctions.maxObject(List allobjs, Expression exp)
Object	GroupingFunctions.min(Expression exp)
Object	GroupingFunctions.min(List allobjs, Expression exp)
Object	GroupingFunctions.min(List allobjs, Expression exp, String saveValueName)
Object	GroupingFunctions.minObject(Expression exp)
Object	GroupingFunctions.minObject(List allobjs, Expression exp)
Map	GroupingFunctions.occurrence(List objs, Expression exp) A function that will take each item from the passed in List and determine a "count" for each item, i.e. how many times each item appears.
Map	GroupingFunctions.occurrence(List objs, Expression exp, Expression limitExp)
Double	GroupingFunctions.sum(Expression exp)
Double	GroupingFunctions.sum(List objs, Expression exp)
Double	GroupingFunctions.sum(List allobjs, Expression exp, String saveValueName)
List	CollectionFunctions.toList(Expression exp)
List	CollectionFunctions.toList(List allobjs, Expression exp)
List	CollectionFunctions.toList(List allobjs, Expression exp, String saveValueName)
List	CollectionFunctions.unique(Expression exp)
List	CollectionFunctions.unique(List objs, Expression exp)

org.josql.internal中Expression的使用

返回Expression的org.josql.internal中的方法

限定符和类型	方法和说明
Expression	OrderBy.getExpression()

参数类型为Expression的org.josql.internal中的方法

限定符和类型	方法和说明
void	Grouper.addExpression(Expression e)
void	ListExpressionComparator.addSortItem(Expression exp, int dir)
void	GroupByExpressionComparator.addSortItem(Expression exp, int ind, int dir)
void	OrderBy.setExpression(Expression exp)

org.josql.parser中Expression的使用

返回Expression的org.josql.parser中的方法

限定符和类型	方法和说明
Expression	JoSQLParser.AdditiveExpression()
Expression	JoSQLParser.AndExpression()
Expression	JoSQLParser.Condition()
Expression	JoSQLParser.ExpressionList()
Expression	JoSQLParser.From()
Expression	JoSQLParser.Having()
Expression	JoSQLParser.MultiplicativeExpression()
Expression	JoSQLParser.OrExpression()
Expression	JoSQLParser.PrimaryExpression()
Expression	JoSQLParser.RegularCondition()
Expression	JoSQLParser.SimpleExpression()
Expression	JoSQLParser.SQLCondition()
Expression	JoSQLParser.WhereClause()