#include <ConstraintEvaluator.h>
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Public Types | |
typedef std::vector< Clause * >::const_iterator | Clause_citer |
typedef std::vector< Clause * >::iterator | Clause_iter |
typedef std::vector< BaseType * >::const_iterator | Constants_citer |
typedef std::vector< BaseType * >::iterator | Constants_iter |
typedef std::list< function >::const_iterator | Functions_citer |
typedef std::list< function >::iterator | Functions_iter |
Public Member Functions | |
void | append_clause (btp_func func, rvalue_list *args) |
Add a clause to a constraint expression. | |
void | append_clause (bool_func func, rvalue_list *args) |
Add a clause to a constraint expression. | |
void | append_clause (int op, rvalue *arg1, rvalue_list *arg2) |
Add a clause to a constraint expression. | |
void | append_constant (BaseType *btp) |
bool | boolean_expression () |
Does the current constraint expression return a boolean value? | |
Clause_iter | clause_begin () |
Clause_iter | clause_end () |
bool | clause_value (Clause_iter &i, DDS &dds, const string &dataset) |
ConstraintEvaluator () | |
BaseType * | eval_function (DDS &dds, const string &dataset) |
Evaluate a function-valued constraint expression. | |
bool | eval_selection (DDS &dds, const string &dataset) |
Evaluate a boolean-valued constraint expression. This is main method for the evaluator ans is called by the BaseType::serialize() methods. | |
bool | functional_expression () |
Does the current constraint expression return a BaseType pointer? | |
void | parse_constraint (const string &constraint, DDS &dds) |
Parse the constraint expression given the current DDS. | |
virtual | ~ConstraintEvaluator () |
External Function Accessors | |
The Constraint Evaluator carries with it a list of external functions it can use while evaluate a constraint expression. If a constraint contains any of these functions, the entries in the list allow the parser to evaluate it. The functions are of three types: those that return boolean values, those that return real (also called BaseType) values, and those that are applied during evaluation of the project for side effect
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void | add_function (const string &name, proj_func f) |
Add a projection function to the list. | |
void | add_function (const string &name, btp_func f) |
Add a BaseType function to the list. | |
void | add_function (const string &name, bool_func f) |
Add a boolean function to the list. | |
bool | find_function (const string &name, proj_func *f) const |
Find a projection function with a given name in the function list. | |
bool | find_function (const string &name, btp_func *f) const |
Find a BaseType function with a given name in the function list. | |
bool | find_function (const string &name, bool_func *f) const |
Find a Boolean function with a given name in the function list. | |
Friends | |
class | func_name_is |
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Definition at line 79 of file ConstraintEvaluator.h. |
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Definition at line 80 of file ConstraintEvaluator.h. Referenced by boolean_expression(), eval_selection(), and ~ConstraintEvaluator(). |
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Definition at line 82 of file ConstraintEvaluator.h. |
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Definition at line 83 of file ConstraintEvaluator.h. Referenced by ~ConstraintEvaluator(). |
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Definition at line 85 of file ConstraintEvaluator.h. Referenced by find_function(). |
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Definition at line 86 of file ConstraintEvaluator.h. |
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Definition at line 49 of file ConstraintEvaluator.cc. References libdap::register_functions(). |
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Definition at line 54 of file ConstraintEvaluator.cc. References Clause_iter, and Constants_iter. |
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Definition at line 217 of file ConstraintEvaluator.cc. References func_name_is. |
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Definition at line 208 of file ConstraintEvaluator.cc. References func_name_is. |
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Definition at line 199 of file ConstraintEvaluator.cc. References func_name_is. Referenced by libdap::register_functions(). |
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This function adds a real-valued (BaseType) function clause to the constraint expression.
Definition at line 143 of file ConstraintEvaluator.cc. |
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This function adds a boolean function clause to the constraint expression.
Definition at line 126 of file ConstraintEvaluator.cc. |
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This function adds an operator clause to the constraint expression.
Definition at line 109 of file ConstraintEvaluator.cc. |
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The DDS maintains a list of BaseType pointers for all the constants that the constraint expression parser generates. These objects are deleted by the DDS destructor. Note that there are no list accessors; these constants are never accessed from the list. The list is simply a convenient way to make sure the constants are disposed of properly. the constraint expression parser. Definition at line 158 of file ConstraintEvaluator.cc. |
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Definition at line 302 of file ConstraintEvaluator.cc. References Clause_iter. |
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Returns the first clause in a parsed constraint expression. Definition at line 70 of file ConstraintEvaluator.cc. |
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Returns a reference to the end of the list of clauses in a parsed constraint expression. It does not reference the last clause Definition at line 78 of file ConstraintEvaluator.cc. |
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Returns the value of the indicated clause of a constraint expression. Definition at line 86 of file ConstraintEvaluator.cc. References Clause::value(). |
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Definition at line 286 of file ConstraintEvaluator.cc. References Clause::value(). Referenced by DODSFilter::send_data(). |
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Definition at line 324 of file ConstraintEvaluator.cc. References Clause_iter, and DBG. Referenced by Sequence::read_row(), Vector::serialize(), UInt32::serialize(), UInt16::serialize(), Structure::serialize(), Str::serialize(), Int32::serialize(), Int16::serialize(), Grid::serialize(), Float64::serialize(), Float32::serialize(), and Byte::serialize(). |
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Definition at line 258 of file ConstraintEvaluator.cc. References Functions_citer. |
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Definition at line 242 of file ConstraintEvaluator.cc. References Functions_citer. |
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Definition at line 226 of file ConstraintEvaluator.cc. References Functions_citer. |
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Definition at line 275 of file ConstraintEvaluator.cc. References Clause::value_clause(). Referenced by DODSFilter::send_data(), and DODSFilter::send_dds(). |
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Evaluate the constraint expression; return the value of the expression. As a side effect, mark the DDS so that BaseType's mfuncs can be used to correctly read the variable's value and send it to the client.
Definition at line 360 of file ConstraintEvaluator.cc. References ce_expr_delete_buffer(), ce_expr_string(), ce_expr_switch_to_buffer(), and ce_exprparse(). Referenced by DODSFilter::send_data(), DODSFilter::send_dds(), and DODSFilter::send_ddx(). |
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Definition at line 76 of file ConstraintEvaluator.h. Referenced by add_function(). |