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SYBASEAD.Z
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SybaseContext.h
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1996-09-09
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// SybaseContext.h
// Copyright 1994, NeXT Software, Inc.
#import <EOAccess/EOAccess.h>
@class SybaseAdaptor;
@class SybaseChannel;
@interface SybaseContext:EOAdaptorContext
{
void *_connection; // not retained to avoid cycle
unsigned _transactionCount; // will be > 1 if transactions are nested
unsigned _fetchesInProgress;
unsigned _openChannels;
int _maxTextSizeDefault;
NSException *_currentException;
struct
{
unsigned connected:1;
unsigned debugEnabled:1;
unsigned _RESERVED:30;
} _flags;
struct {
unsigned willReportClientMessage:1;
unsigned willReportServerMessage:1;
unsigned _RESERVED:30;
} _sybaseDelegateRespondsTo;
}
- initWithSybaseAdaptor:(SybaseAdaptor *)adaptor;
- (void)sybaseChannelWillOpen:(SybaseChannel *)channel;
- (void)sybaseChannelDidClose:(SybaseChannel *)channel;
- (BOOL)sybaseChannelWillBeginFetching:(SybaseChannel *)channel;
- (void)sybaseChannelDidEndFetching:(SybaseChannel *)channel;
// These methods are called by the SybaseChannel to notify
// the SybaseContext of changes.
- (SybaseChannel *)currentChannel;
- (BOOL)isConnected;
- (void)connect;
- (void)disconnect;
// Methods to query the current status of the SybaseContext
+ (void *)contextPointer;
// Returns the sybase global context pointer (CS_CONTEXT *)
// If you are making calls directly to the sybase client library
// you may need this.
- (void *)connection;
// Returns the CT library connection for this context (CS_CONNECTION *)
- (void)raiseCurrentException;
// If the ivar "_currentException" is not null, raise it.
- (void)setCurrentException:(NSException *)exception;
// Set the "_currentException" ivar.
+ (void)setTimeOutInterval:(int)seconds;
+ (int)timeOutInterval;
// Sets timeOut interval value which will be used during creation of any
// new channels
+ (void)setLoginTimeOutInterval:(int)seconds;
+ (int)loginTimeOutInterval;
// Sets login timeOut interval value which will be used during creation
// of any new channels
- (int)maxTextSizeDefault;
// Returns the maximum number of bytes to be returned from a sybase image
// to text field. The default is set to INT_MAX as defined for the host
// machine. This number can be overwritten on a channel by channel basis
// by sending the appropriate SQL to the channel using the
// evaluateExpression: method.
- (void)setMaxTextSizeDefault:(int)textSize;
// Sets the default testsize. Any channels created after this method has
// been invoked will use the current textsize rather than the default.
@end
@interface NSObject(SybaseContextDelegation)
- (BOOL)sybaseContext:(SybaseContext *)context willReportClientMessage:(NSDictionary *)clientMessage;
- (BOOL)sybaseContext:(SybaseContext *)context willReportServerMessage:(NSDictionary *)serverMessage;
@end