Datasnap.Provider

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Defines classes that implement DataSnap provider functionality, such as providers, resolvers, packet data sets, SQL resolvers, and related functionality.

Classes

EDSWriter	EDSWriter is the exception class for errors that occur when creating data packets to represent the data or metadata in a dataset.
IProviderContainer
TBaseProvider	TBaseProvider is a base class for all providers that represent the data in a dataset.
TCustomPacketWriter
TCustomProvider	TCustomProvider is the base class for data providers.
TCustomResolver	TCustomResolver is the base class for components that apply updates on behalf of a provider.
TDataPacketWriter
TDataSetProvider	TDataSetProvider provides data from a dataset and resolves updates to that dataset or its database server.
TDataSetResolver	TDataSetResolver applies updates to a dataset on behalf of a provider.
TLocalAppServer
TPacketDataSet	TPacketDataSet represents a data packet or delta packet that is used by a provider.
TProvider	TProvider provides data to and applies updates from a client dataset.
TPutFieldInfo	TPutFieldInfo contains information about a field.
TSQLResolver	TSQLResolver applies updates to a database server on behalf of a provider.
TUpdateTree	TUpdateTree stores information about a delta packet on behalf of a resolver.

Routines

GetObjectProperty
GetStringProperty
VarArrayFromStrings	Creates a Variant array that contains the strings in a TStrings object.
VarArrayFromWideStrings

Types

_di_IProviderContainer
PPutFieldInfo	PPutFieldInfo is a pointer type to a TPutFieldInfo record.
TAfterUpdateRecordEvent	TAfterUpdateRecordEvent represents the type of events that occur when the associated resolver has just updated a record.
TBeforeCommitEvent	TBeforeCommitEvent represents the procedure type for the events that occur before committing a data set.
TBeforeUpdateRecordEvent	TBeforeUpdateRecordEvent represents the procedure type for the events that occur before a record is updated.
TDataRequestEvent	Represents the function type for the events that occur when a provider calls its DataRequest method.
TGetDSProps	Represents the procedure type for the events that occur when the provider adds additional information to a data packet it is creating.
TGetParamsEvent	Represents the procedure type for the events that occur when the provider adds attributes to the data set.
TGetRecordOption	TGetRecordOption enumerates the types of information that can be added to data packets.
TGetRecordOptions	TGetRecordOptions is used to decide what type of information is added to data packets.
TGetTableNameEvent	Represents the procedure type for the events that occur when a resolver initializes its information about the table to which it applies updates.
TInfoArray	TInfoArray is an array of TPutFieldInfo records.
TOnValidate	Represents the procedure type for the events that occur when the provider applies updates contained in a Delta packet.
TProviderDataEvent	Represents the procedure type for the events that occur when the provider applies updates or retrieves data.
TProviderOption	TProviderOption and TProviderOptions influence the type of information that is communicated between client datasets and provider components.
TProviderOptions	TProviderOptions influences the type of information that is communicated between client datasets and provider components.
TPutFieldInfo	TPutFieldInfo contains information about a field.
TPutFieldProc	Allows to decide the procedure used when adding a new field to a data set.
TResolverErrorEvent	Represents the procedure type for the events that occur when the provider fails to update a record.
TResolverResponse	TResolverResponse indicates the action a resolver component should take after an OnUpdateError event handler handles an update error.

Variables

InformixLob	Resolves Informix rather than Oracle BLOB and CLOB fields.
MetaDataOption	MetaDataOption: Integer;
ResetOption	ResetOption: Integer;
TInfoArray	TInfoArray is an array of TPutFieldInfo records.
XMLOption	XMLOption: Integer;
XMLUTF8Option	XMLUTF8Option: Integer;

Constants

grMetaData	grMetaData: TGetRecordOption = grMetaData;
grReset	grReset: TGetRecordOption = grReset;
grXML	grXML: TGetRecordOption = grXML;
grXMLUTF8	grXMLUTF8: TGetRecordOption = grXMLUTF8;
MetaDataOption	MetaDataOption: Integer;
poAllowCommandText	poAllowCommandText: TProviderOption = poAllowCommandText;
poAllowMultiRecordUpdates	poAllowMultiRecordUpdates: TProviderOption = poAllowMultiRecordUpdates;
poAutoRefresh	poAutoRefresh: TProviderOption = poAutoRefresh;
poCascadeDeletes	poCascadeDeletes: TProviderOption = poCascadeDeletes;
poCascadeUpdates	poCascadeUpdates: TProviderOption = poCascadeUpdates;
poDisableDeletes	poDisableDeletes: TProviderOption = poDisableDeletes;
poDisableEdits	poDisableEdits: TProviderOption = poDisableEdits;
poDisableInserts	poDisableInserts: TProviderOption = poDisableInserts;
poFetchBlobsOnDemand	poFetchBlobsOnDemand: TProviderOption = poFetchBlobsOnDemand;
poFetchDetailsOnDemand	poFetchDetailsOnDemand: TProviderOption = poFetchDetailsOnDemand;
poIncFieldProps	poIncFieldProps: TProviderOption = poIncFieldProps;
poNoReset	poNoReset: TProviderOption = poNoReset;
poPropogateChanges	poPropogateChanges: TProviderOption = poPropogateChanges;
poReadOnly	poReadOnly: TProviderOption = poReadOnly;
poRetainServerOrder	poRetainServerOrder: TProviderOption = poRetainServerOrder;
poUseQuoteChar	poUseQuoteChar: TProviderOption = poUseQuoteChar;
ResetOption	ResetOption: Integer;
rrAbort	rrAbort: TResolverResponse = rrAbort;
rrApply	rrApply: TResolverResponse = rrApply;
rrIgnore	rrIgnore: TResolverResponse = rrIgnore;
rrMerge	rrMerge: TResolverResponse = rrMerge;
rrSkip	rrSkip: TResolverResponse = rrSkip;
XMLOption	XMLOption: Integer;
XMLUTF8Option	XMLUTF8Option: Integer;