Class: OracleDB::Lob

Inherits:
Object
  • Object
show all
Defined in:
lib/oracledb.rb,
ext/oracledb/rboradb_lob.c

Instance Method Summary collapse

Constructor Details

#initialize(conn, type, value = nil) ⇒ Lob

Returns a new instance of Lob.



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# File 'lib/oracledb.rb', line 42

def initialize(conn, type, value = nil)
  __initialize(conn, type)
  set(value)
end

Instance Method Details

#chunk_size ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 132

static VALUE lob_chunk_size(VALUE self)
{
    GET_UINT32(Lob, ChunkSize);
}

#close ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 112

static VALUE lob_close(VALUE self)
{
    Lob_t *lob = To_Lob(self);

    if (dpiLob_close(lob->handle) != DPI_SUCCESS) {
        RBORADB_RAISE_ERROR(lob);
    }
    return Qnil;
}

#close_resource ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 122

static VALUE lob_close_resource(VALUE self)
{
    Lob_t *lob = To_Lob(self);

    if (dpiLob_closeResource(lob->handle) != DPI_SUCCESS) {
        RBORADB_RAISE_ERROR(lob);
    }
    return Qnil;
}

#directory_and_file_name ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 137

static VALUE lob_directory_and_file_name(VALUE self)
{
    Lob_t *lob = To_Lob(self);
    const char *dir, *file;
    uint32_t dlen, flen;

    if (dpiLob_getDirectoryAndFileName(lob->handle, &dir, &dlen, &file, &flen) != DPI_SUCCESS) {
        RBORADB_RAISE_ERROR(lob);
    }
    return rb_ary_new_from_args(2, rb_enc_str_new(dir, dlen, rb_utf8_encoding()), rb_enc_str_new(file, flen, rb_utf8_encoding()));
}

#file_exists ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 149

static VALUE lob_file_exists(VALUE self)
{
    GET_BOOL(Lob, FileExists);
}

#is_resource_open ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 154

static VALUE lob_is_resource_open(VALUE self)
{
    GET_BOOL(Lob, IsResourceOpen);
}

#open_resource ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 169

static VALUE lob_open_resource(VALUE self)
{
    Lob_t *lob = To_Lob(self);

    if (dpiLob_openResource(lob->handle) != DPI_SUCCESS) {
        RBORADB_RAISE_ERROR(lob);
    }
    return Qnil;
}

#read(length = nil) ⇒ Object 



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# File 'lib/oracledb.rb', line 52

def read(length = nil)
  return "" if length.zero?
  len = length
  if length.nil?
    len = size - @pos
    return "" if len <= 0
  end
  value, len = __read_bytes(@pos + 1, len)
  if len > 0
    @pos += len
    value
  elsif length.nil?
    ""
  else
    nil
  end
end

#seek(offset, whence = IO::SEEK_SET) ⇒ Object 



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# File 'lib/oracledb.rb', line 70

def seek(offset, whence = IO::SEEK_SET)
  case whence
  when IO::SEEK_SET, :SET
    @pos = offset
  when IO::SEEK_CUR, :CUR
    @pos += offset
  when IO::SEEK_END, :END
    @pos = size + offset
  else
    raise ArgumentError, "Unkown whence value: #{whence}"
  end
  0
end

#set(value) ⇒ Object 



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# File 'lib/oracledb.rb', line 47

def set(value)
  len = __set_from_bytes(value)
  @pos = len
end

#set_directory_and_file_name(directory_alias, file_name) ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 208

static VALUE lob_set_directory_and_file_name(VALUE self, VALUE directory_alias, VALUE file_name)
{
    Lob_t *lob = To_Lob(self);

    ExportString(directory_alias);
    ExportString(file_name);
    if (dpiLob_setDirectoryAndFileName(lob->handle, RSTRING_PTR(directory_alias), RSTRING_LEN(directory_alias), RSTRING_PTR(file_name), RSTRING_LEN(file_name)) != DPI_SUCCESS) {
        RBORADB_RAISE_ERROR(lob);
    }
    return Qnil;
}

#size ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 159

static VALUE lob_size(VALUE self)
{
    GET_UINT64(Lob, Size);
}

#trim(new_size) ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 220

static VALUE lob_trim(VALUE self, VALUE new_size)
{
    Lob_t *lob = To_Lob(self);

    if (dpiLob_trim(lob->handle, NUM2ULL(new_size)) != DPI_SUCCESS) {
        RBORADB_RAISE_ERROR(lob);
    }
    return Qnil;
}

#type ⇒ Object 



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# File 'ext/oracledb/rboradb_lob.c', line 164

static VALUE lob_type(VALUE self)
{
    GET_ENUM(Lob, Type, dpiOracleTypeNum);
}

#write(value) ⇒ Object 



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# File 'lib/oracledb.rb', line 84

def write(value)
  len = __write_bytes(@pos + 1, value)
  @pos += len
  len
end