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SWbemRpnQueryToken structure (wmiutils.h)

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The SWbemRpnQueryToken structure represents the query tokens in a WMIQ_ANALYSIS_RPN_SEQUENCE type query. An example of a query token is the following: j > 4.

Syntax

typedef struct tag_SWbemRpnQueryToken {
  ULONG                   m_uVersion;
  ULONG                   m_uTokenType;
  ULONG                   m_uSubexpressionShape;
  ULONG                   m_uOperator;
  SWbemQueryQualifiedName *m_pRightIdent;
  SWbemQueryQualifiedName *m_pLeftIdent;
  ULONG                   m_uConstApparentType;
  SWbemRpnConst           m_Const;
  ULONG                   m_uConst2ApparentType;
  SWbemRpnConst           m_Const2;
  LPCWSTR                 m_pszRightFunc;
  LPCWSTR                 m_pszLeftFunc;
} SWbemRpnQueryToken;

Members

m_uVersion

Unused. Always 1.

m_uTokenType

Type of token this instance represents.

WMIQ_RPN_TOKEN_EXPRESSION (1)

This token is an expression, for example, J = 7.

WMIQ_RPN_TOKEN_AND (2)

This token is a logical AND.

WMIQ_RPN_TOKEN_OR (3)

This token is a logical OR.

WMIQ_RPN_TOKEN_NOT (4)

This token is a logical NOT.

m_uSubexpressionShape

If the m_uTokenType member is WMIQ_RPN_TOKEN_EXPRESSION, m_uSubexpressionShape bitmask value specifies the shape of the expression.

WMIQ_RPN_LEFT_PROPERTY_NAME (1 (0x1))

Left argument is a property name.

WMIQ_RPN_RIGHT_PROPERTY_NAME (2 (0x2))

Right argument is a property name.

WMIQ_RPN_CONST2 (4 (0x4))

Has a second constant. Used with "BETWEEN" clauses.

WMIQ_RPN_CONST (8 (0x8))

Has a constant.

WMIQ_RPN_RELOP (16 (0x10))

The field m_uOperator is not 0 (zero).

WMIQ_RPN_LEFT_FUNCTION (32 (0x20))

Left argument is a function.

WMIQ_RPN_RIGHT_FUNCTION (64 (0x40))

Right argument is a function.

m_uOperator

This field can have the value 0 (zero), or one of the following values.

WMIQ_RPN_OP_UNDEFINED (0 (0x0))

The operator is undefined or unknown.

WMIQ_RPN_OP_EQ (1 (0x1))

The operator is equal-to (=).

WMIQ_RPN_OP_NE (2 (0x2))

The operator is not-equal-to (<>).

WMIQ_RPN_OP_GE (3 (0x3))

The operator is greater-than-or-equal-to (>=).

WMIQ_RPN_OP_LE (4 (0x4))

The operator is less-than-or-equal-to (<=).

WMIQ_RPN_OP_LT (5 (0x5))

The operator is less-than (<) .

WMIQ_RPN_OP_GT (6 (0x6))

The operator is greater-than (>).

WMIQ_RPN_OP_LIKE (7 (0x7))

The operator is LIKE.

WMIQ_RPN_OP_ISA (8 (0x8))

The operator is ISA.

WMIQ_RPN_OP_ISNOTA (9 (0x9))

The operator is ISNOTA.

WMIQ_RPN_OP_ISNULL (10 (0xA))

The operator is ISNULL.

WMIQ_RPN_OP_ISNOTNULL (11 (0xB))

The operator is ISNOTNULL.

m_pRightIdent

If there are two property names in a token, m_pRightIdent is used to identify the right property name.

m_pLeftIdent

If there are two property names in a token m_pLeftIdent is used to identify the left property name. If only one property name is present, it appears in this member.

m_uConstApparentType

Apparent data type of the constant.

VT_I4 (3 (0x3))

Long data type.

VT_R8 (5 (0x5))

Double precision floating-point data type.

VT_BOOL (11 (0xB))

Boolean data type

VT_UI4 (19 (0x13))

Unsigned long data type.

VT_I8 (20 (0x14))

Signed 64-bit integer.

VT_UI8 (21 (0x15))

Unsigned 64-bit integer.

VT_LPWSTR (31 (0x1F))

LPCWSTR data type.

m_Const

Value of the first constant. For more information, see SWbemRpnConst.

m_uConst2ApparentType

Type of second constant. The fields m_uConst2ApparentType and m_uConst2 are used only for BETWEEN phrases.

VT_I4 (3 (0x3))

Long data type.

VT_R8 (5 (0x5))

Double precision floating-point data type.

VT_BOOL (11 (0xB))

Boolean data type.

VT_UI4 (19 (0x13))

Unsigned long data type.

VT_I8 (20 (0x14))

Signed 64-bit integer.

VT_UI8 (21 (0x15))

Unsigned 64-bit integer.

VT_LPWSTR (31 (0x1F))

LPCWSTR data type.

m_Const2

Value of the second constant. The fields m_uConst2ApparentType and m_uConst2 are used only for BETWEEN phrases. For more information, see SWbemRpnConst.

m_pszRightFunc

Specifies a function on the right of the operator in a WHERE clause. If there is no function on the right of the operator in this token, this field is NULL.

m_pszLeftFunc

Specifies a function on the left of the operator in a WHERE clause. If there is no function on the left of the operator in this token, this field is NULL.

Requirements

Requirement Value
Minimum supported client Windows Vista
Minimum supported server Windows Server 2008
Header wmiutils.h

See also

IWbemQuery

IWbemQuery::GetAnalysis

SWbemRpnConst

SWbemrpnEncodedQuery