instiki/vendor/plugins/sqlite3-ruby/sqlite3/value.rb

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2007-01-22 14:43:50 +01:00
#--
# =============================================================================
# Copyright (c) 2004, Jamis Buck (jgb3@email.byu.edu)
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# * The names of its contributors may not be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# =============================================================================
#++
require 'sqlite3/constants'
module SQLite3
class Value
attr_reader :handle
def initialize( db, handle )
@driver = db.driver
@handle = handle
end
def null?
type == :null
end
def to_blob
@driver.value_blob( @handle )
end
def length( utf16=false )
if utf16
@driver.value_bytes16( @handle )
else
@driver.value_bytes( @handle )
end
end
def to_f
@driver.value_double( @handle )
end
def to_i
@driver.value_int( @handle )
end
def to_int64
@driver.value_int64( @handle )
end
def to_s( utf16=false )
@driver.value_text( @handle, utf16 )
end
def type
case @driver.value_type( @handle )
when Constants::ColumnType::INTEGER then :int
when Constants::ColumnType::FLOAT then :float
when Constants::ColumnType::TEXT then :text
when Constants::ColumnType::BLOB then :blob
when Constants::ColumnType::NULL then :null
end
end
end
end