One-argument standard functions. More...
#include <qExpr.h>
Inheritance diagram for ibis::math::stdFunction1:
Public Member Functions | |
| virtual stdFunction1 * | dup () const |
| Make a duplicate copy of the term. | |
| virtual double | eval () const |
| Evaluate one-argument standard functions from math.h. More... | |
| virtual void | print (std::ostream &out) const |
| Print a human readable version of the expression. | |
| virtual void | printFull (std::ostream &out) const |
| Same as print. | |
| virtual term * | reduce () |
| Shorten the expression by evaluating the constants. More... | |
| stdFunction1 (const char *name) | |
| stdFunction1 (const STDFUN1 ft) | |
| virtual TERM_TYPE | termType () const |
 Public Member Functions inherited from ibis::math::term | |
| virtual bool | isTrue () const |
| Should the value be treated as true? This implementation captures the normal case, where an arithmetic expression is treated as 'true' if it is not zero. More... | |
| Public Member Functions inherited from ibis::qExpr | |
| bool | directEval () const |
| Can the expression be directly evaluated? | |
| void | extractDeprecatedJoins (std::vector< const deprecatedJoin * > &) const |
| Extract conjunctive terms of the deprecated joins. | |
| qRange * | findRange (const char *vname) |
| Find the first range condition involving the named variable. | |
| void | getConjunctiveTerms (termTableList &) const |
| Extract the top-level conjunctive terms. More... | |
| qExpr *& | getLeft () |
| Return a pointer to the left child. More... | |
| const qExpr * | getLeft () const |
| Return a const pointer to the left child. | |
| qExpr *& | getRight () |
| Return a pointer to the right child. More... | |
| const qExpr * | getRight () const |
| Return a const pointer to the right child. | |
| virtual void | getTableNames (std::set< std::string > &plist) const |
| Identify the data partitions involved in the query expression. More... | |
| TYPE | getType () const |
| Return the node type. | |
| virtual bool | isConstant () const |
| Is this expression a constant? A constant remains the same not matter which row it is applied to. More... | |
| virtual bool | isSimple () const |
| Is the expression simple? A simple expression contains only range conditions connected with logical operators. More... | |
| bool | isTerminal () const |
| Is this expression a terminal node of an expression tree? | |
| virtual uint32_t | nItems () const |
| Count the number of items in the query expression. | |
| qExpr & | operator= (const qExpr &rhs) |
| Assignment operator. | |
| qExpr () | |
| Default constructor. It generates a node of undefined type. | |
| qExpr (TYPE op) | |
| Construct a node of specified type. Not for implicit type conversion. | |
| qExpr (TYPE op, qExpr *qe1, qExpr *qe2) | |
| Construct a full specified node. More... | |
| qExpr (const qExpr &qe) | |
| Copy Constructor. Deep copy. | |
| double | reorder (const weight &) |
| After reordering, the lightest weight is one the left side of a group of commutable operators. More... | |
| int | separateSimple (ibis::qExpr *&simple, ibis::qExpr *&tail) const |
| Separate an expression tree into two connected with an AND operator. More... | |
| void | setLeft (qExpr *expr) |
| Change the left child. More... | |
| void | setRight (qExpr *expr) |
| Change the right child. More... | |
| void | swap (qExpr &rhs) |
| Swap the content. No exception expected. | |
| virtual | ~qExpr () |
| Destructor. More... | |
Additional Inherited Members | |
| Public Types inherited from ibis::qExpr | |
| enum | COMPARE { OP_UNDEFINED, OP_LT, OP_GT, OP_LE, OP_GE, OP_EQ } |
| Comparison operator supported in RANGE. | |
| typedef std::vector< TTN > | termTableList |
| enum | TYPE { LOGICAL_UNDEFINED, LOGICAL_NOT, LOGICAL_AND, LOGICAL_OR, LOGICAL_XOR, LOGICAL_MINUS, RANGE, DRANGE, STRING, ANYSTRING, KEYWORD, ALLWORDS, COMPRANGE, MATHTERM, DEPRECATEDJOIN, TOPK, EXISTS, ANYANY, LIKE, INTHOD, UINTHOD } |
| Definition of node types. More... | |
| Static Public Member Functions inherited from ibis::qExpr | |
| static std::string | extractTableName (const char *) |
| Extract the data partition name from the column name cn. More... | |
| static void | simplify (ibis::qExpr *&) |
| Attempt to simplify the query expressions. More... | |
| static void | splitColumnName (const char *, std::string &, std::string &) |
| Split the incoming name into data partition name and column name. More... | |
| Protected Member Functions inherited from ibis::math::term | |
| term (const term &rhs) | |
| Protected Member Functions inherited from ibis::qExpr | |
| void | adjust () |
| Adjust the tree to favor the sequential evaluation order. More... | |
| Protected Attributes inherited from ibis::qExpr | |
| qExpr * | left |
| The left child. | |
| qExpr * | right |
| The right child. | |
| TYPE | type |
| The type of node. More... | |
Detailed Description
One-argument standard functions.
Member Function Documentation
|
virtual |
Evaluate one-argument standard functions from math.h.
The functions modf and frexp take two argument, but only one is an input argument, only the return value of these functions are returned.
Implements ibis::math::term.
|
virtual |
Shorten the expression by evaluating the constants.
Return a new pointer if the expression is changed, otherwise Returnn the pointer this.
Reimplemented from ibis::math::term.
References ibis::math::term::eval(), ibis::qExpr::getLeft(), and ibis::math::term::reduce().
The documentation for this class was generated from the following files:
- qExpr.h
- qExpr.cpp
