Class: ReactivePgClient::PgCursor
- Inherits:
-
Object
- Object
- ReactivePgClient::PgCursor
show all
- Defined in:
- /Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb
Overview
A cursor that reads progressively the rows from Postgres, it is usefull for reading very large result.
Constant Summary
- @@j_api_type =
Object.new
Class Method Summary
(collapse)
Instance Method Summary
(collapse)
Class Method Details
+ (Boolean) accept?(obj)
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# File '/Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb', line 18
def @@j_api_type.accept?(obj)
obj.class == PgCursor
end
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+ (Object) j_api_type
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# File '/Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb', line 27
def self.j_api_type
@@j_api_type
end
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+ (Object) j_class
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# File '/Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb', line 30
def self.j_class
Java::IoReactiversePgclient::PgCursor.java_class
end
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+ (Object) unwrap(obj)
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# File '/Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb', line 24
def @@j_api_type.unwrap(obj)
obj.j_del
end
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+ (Object) wrap(obj)
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# File '/Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb', line 21
def @@j_api_type.wrap(obj)
PgCursor.new(obj)
end
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Instance Method Details
- (void) close { ... }
This method returns an undefined value.
Like
#close but with a
completionHandler
called when the cursor has been released.
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# File '/Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb', line 55
def close
if !block_given?
return @j_del.java_method(:close, []).call()
elsif block_given?
return @j_del.java_method(:close, [Java::IoVertxCore::Handler.java_class]).call((Proc.new { |ar| yield(ar.failed ? ar.cause : nil) }))
end
raise ArgumentError, "Invalid arguments when calling close()"
end
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- (true, false) has_more?
Returns true
when the cursor has results in progress and the should be called to retrieve
them.
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# File '/Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb', line 46
def has_more?
if !block_given?
return @j_del.java_method(:hasMore, []).call()
end
raise ArgumentError, "Invalid arguments when calling has_more?()"
end
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- (void) read(count = nil) { ... }
This method returns an undefined value.
Read rows from the cursor, the result is provided asynchronously to the
handler
.
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# File '/Users/julien/java/reactive-pg-client/target/classes/reactive-pg-client/pg_cursor.rb', line 37
def read(count=nil)
if count.class == Fixnum && block_given?
return @j_del.java_method(:read, [Java::int.java_class,Java::IoVertxCore::Handler.java_class]).call(count,(Proc.new { |ar| yield(ar.failed ? ar.cause : nil, ar.succeeded ? ::Vertx::Util::Utils.safe_create(ar.result,::ReactivePgClient::PgRowSet) : nil) }))
end
raise ArgumentError, "Invalid arguments when calling read(#{count})"
end
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