Method: Baza::Driver::MysqlJava#insert_multi

Defined in:
lib/baza/driver/mysql_java.rb

#insert_multi(tablename, arr_hashes, args = {}) ⇒ Object

Inserts multiple rows in a table. Can return the inserted IDs if asked to in arguments.



93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
 
# File 'lib/baza/driver/mysql_java.rb', line 93

def insert_multi(tablename, arr_hashes, args = {})
  sql = "INSERT INTO `#{tablename}` ("

  first = true
  if args && args[:keys]
    keys = args[:keys]
  elsif arr_hashes.first.is_a?(Hash)
    keys = arr_hashes.first.keys
  else
    raise "Could not figure out keys."
  end

  keys.each do |col_name|
    sql << "," unless first
    first = false if first
    sql << "`#{escape_column(col_name)}`"
  end

  sql << ") VALUES ("

  first = true
  arr_hashes.each do |hash|
    if first
      first = false
    else
      sql << "),("
    end

    first_key = true
    if hash.is_a?(Array)
      hash.each do |val|
        if first_key
          first_key = false
        else
          sql << ","
        end

        sql << @db.sqlval(val)
      end
    else
      hash.each do |_key, val|
        if first_key
          first_key = false
        else
          sql << ","
        end

        sql << @db.sqlval(val)
      end
    end
  end

  sql << ")"

  return sql if args && args[:return_sql]

  query_no_result_set(sql)

  if args && args[:return_id]
    first_id = last_id
    raise "Invalid ID: #{first_id}" if first_id.to_i <= 0
    ids = [first_id]
    1.upto(arr_hashes.length - 1) do |count|
      ids << first_id + count
    end

    ids_length = ids.length
    arr_hashes_length = arr_hashes.length
    raise "Invalid length (#{ids_length}, #{arr_hashes_length})." if ids_length != arr_hashes_length

    return ids
  else
    return nil
  end
end