IBlob Interface

Reference

Definition

Namespace:: Java.Sql

Assembly:: Mono.Android.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

The representation (mapping) in the JavaTM programming language of an SQL BLOB value.

[Android.Runtime.Register("java/sql/Blob", "", "Java.Sql.IBlobInvoker")]
public interface IBlob : Android.Runtime.IJavaObject, IDisposable, Java.Interop.IJavaPeerable

[<Android.Runtime.Register("java/sql/Blob", "", "Java.Sql.IBlobInvoker")>]
type IBlob = interface
    interface IJavaObject
    interface IDisposable
    interface IJavaPeerable

Attributes: RegisterAttribute

Implements: IJavaObject IJavaPeerable IDisposable

Remarks

The representation (mapping) in the JavaTM programming language of an SQL BLOB value. An SQL BLOB is a built-in type that stores a Binary Large Object as a column value in a row of a database table. By default drivers implement Blob using an SQL locator(BLOB), which means that a Blob object contains a logical pointer to the SQL BLOB data rather than the data itself. A Blob object is valid for the duration of the transaction in which is was created.

Methods in the interfaces ResultSet, CallableStatement, and PreparedStatement, such as getBlob and setBlob allow a programmer to access an SQL BLOB value. The Blob interface provides methods for getting the length of an SQL BLOB (Binary Large Object) value, for materializing a BLOB value on the client, and for determining the position of a pattern of bytes within a BLOB value. In addition, this interface has methods for updating a BLOB value.

All methods on the Blob interface must be fully implemented if the JDBC driver supports the data type.

Added in 1.2.

Java documentation for java.sql.Blob.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Properties

BinaryStream	Retrieves this `Blob` object as a binary stream.
Handle	Gets the JNI value of the underlying Android object. (Inherited from IJavaObject)
JniIdentityHashCode	Returns the value of `java.lang.System.identityHashCode()` for the wrapped instance. (Inherited from IJavaPeerable)
JniManagedPeerState	State of the managed peer. (Inherited from IJavaPeerable)
JniPeerMembers	Member access and invocation support. (Inherited from IJavaPeerable)
PeerReference	Returns a JniObjectReference of the wrapped Java object instance. (Inherited from IJavaPeerable)

Methods

Disposed()	Called when the instance has been disposed. (Inherited from IJavaPeerable)
DisposeUnlessReferenced()	If there are no outstanding references to this instance, then calls `Dispose()`; otherwise, does nothing. (Inherited from IJavaPeerable)
Finalized()	Called when the instance has been finalized. (Inherited from IJavaPeerable)
Free()	This method frees the `Blob` object and releases the resources that it holds.
GetBinaryStream(Int64, Int64)	Returns an `InputStream` object that contains a partial `Blob` value, starting with the byte specified by pos, which is length bytes in length.
GetBytes(Int64, Int32)	Retrieves all or part of the `BLOB` value that this `Blob` object represents, as an array of bytes.
Length()	Returns the number of bytes in the `BLOB` value designated by this `Blob` object.
Position(Byte[], Int64)	Retrieves the byte position at which the specified byte array `pattern` begins within the `BLOB` value that this `Blob` object represents.
Position(IBlob, Int64)	Retrieves the byte position in the `BLOB` value designated by this `Blob` object at which `pattern` begins.
SetBinaryStream(Int64)	Retrieves a stream that can be used to write to the `BLOB` value that this `Blob` object represents.
SetBytes(Int64, Byte[], Int32, Int32)	Writes all or part of the given `byte` array to the `BLOB` value that this `Blob` object represents and returns the number of bytes written.
SetBytes(Int64, Byte[])	Writes the given array of bytes to the `BLOB` value that this `Blob` object represents, starting at position `pos`, and returns the number of bytes written.
SetJniIdentityHashCode(Int32)	Set the value returned by `JniIdentityHashCode`. (Inherited from IJavaPeerable)
SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from IJavaPeerable)
SetPeerReference(JniObjectReference)	Set the value returned by `PeerReference`. (Inherited from IJavaPeerable)
Truncate(Int64)	Truncates the `BLOB` value that this `Blob` object represents to be `len` bytes in length.
UnregisterFromRuntime()	Unregister this instance so that the runtime will not return it from future Java.Interop.JniRuntime+JniValueManager.PeekValue invocations. (Inherited from IJavaPeerable)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)

Applies to

Udostępnij za pośrednictwem