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IExpressionEval::LoadAll Method

Use this method to pre-compile all expressions in the expression store. Each expression that pre-compiles correctly is loaded into the expression cache.

HRESULT IExpressionEval::LoadAll(
);
Sub LoadAll()

Parameters

None.

Return Value

[C++]

This method returns an HRESULT indicating whether it completed successfully. See the Error Values section for more details.

[Visual Basic]

None.

Error Values

[C++]

This method returns S_OK (0x00000000) to indicate success and either standard or custom COM HRESULT error values to indicate failure. For more information about standard COM errors, see Standard COM Errors.

[Visual Basic]

This method sets the Number property of the global Err object to S_OK (&H00000000) to indicate success and to either standard or custom COM error values to indicate failure. For more information about standard COM errors, see Standard COM Errors.

The following table shows the custom COM errors that this method can return.

Constant

Value

Description

E_EXPR_BADARGTYPE

0x81100018

Argument data type infomation missing from expression, or unrecognized argument data type encountered in expression

E_EXPR_BADARGVALUE

0x81100022

Invalid expression argument value, or impossible conversion

E_EXPR_BADCLAUSE

0x81100016

Invalid clause encountered

E_EXPR_BADCONNECTION

0x8110001F

Invalid connection

E_EXPR_BADOPER

0x81100017

Operator missing, unrecognized operator encountered, or type mismatch

E_EXPR_BADTERM

0x81100015

Term type missing, or unrecognized term type encountered

E_EXPR_BADXML

0x81100014

An unrecognized XML element was encountered

E_EXPR_NOCONNECTIONSTRING

0x8110000D

No connection string specified

E_EXPR_XMLPARSE

0x81100013

XML DOM object parsing error

[C++]

Additional information may be available using the global Err object, which can be accessed using the API function GetErrorInfo. In particular, the GetDescription method of the IErrorInfo interface may return a text description of the error.

[Visual Basic]

Additional information may be available using the global Err object. In particular, the Description property may contain a text description of the error.

Remarks

Any expressions in the expression cache at the time of the call are reloaded.

If there are many expressions in the expression store, the LoadAll method may be slow. Use the LoadExpr method to load only specific expressions into the expression cache.

For every expression loaded into the expression cache, the LoadAll method increments the read-only ExprCount property by one (1).

Use the FlushAll method to remove all expressions from the expression cache.

The Connect method must be called before using the LoadAll method.

See Also

Other Resources

ExpressionEval Object

IExpressionEval::Connect Method

IExpressionEval::get_ExprCount Property

IExpressionEval::FlushAll Method

IExpressionEval::FlushExpr Method

IExpressionEval::LoadExpr Method