Module: Jackcess::TypeConverter

Defined in:
lib/jackcess/type_converter.rb

Class Method Summary collapse

Class Method Details

.data_type_to_ruby_type(data_type) ⇒ Object

Map Jackcess DataType to Ruby type symbol



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# File 'lib/jackcess/type_converter.rb', line 98

def data_type_to_ruby_type(data_type)
  case data_type.to_s
  when "TEXT"
    :text
  when "MEMO"
    :memo
  when "BYTE"
    :byte
  when "INT"
    :int
  when "LONG"
    :long
  when "FLOAT"
    :float
  when "DOUBLE"
    :double
  when "MONEY"
    :currency
  when "SHORT_DATE_TIME"
    :date_time
  when "BOOLEAN"
    :boolean
  when "BINARY", "OLE"
    :binary
  when "GUID"
    :guid
  else
    :unknown
  end
end

.from_java(value) ⇒ Object

Convert Java types to Ruby types



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# File 'lib/jackcess/type_converter.rb', line 10

def from_java(value)
  return nil if value.nil?

  case value
  when Java::JavaLang::String
    value.to_s
  when Java::JavaLang::Integer, Java::JavaLang::Short, Java::JavaLang::Byte
    value.to_i
  when Java::JavaLang::Long
    value.to_i
  when Java::JavaLang::Float, Java::JavaLang::Double
    value.to_f
  when Java::JavaLang::Boolean
    value.boolean_value
  when Java::JavaUtil::Date
    Time.at(value.time / 1000.0)
  when Java::JavaMath::BigDecimal
    BigDecimal(value.to_s)
  when Java::byte[]
    String.from_java_bytes(value)
  else
    value
  end
end

.ruby_type_to_data_type(type_sym) ⇒ Object

Map Ruby type symbols to Jackcess DataType enums



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# File 'lib/jackcess/type_converter.rb', line 66

def ruby_type_to_data_type(type_sym)
  case type_sym
  when :text
    DataType::TEXT
  when :memo
    DataType::MEMO
  when :byte
    DataType::BYTE
  when :int
    DataType::INT
  when :long
    DataType::LONG
  when :float
    DataType::FLOAT
  when :double
    DataType::DOUBLE
  when :currency
    DataType::MONEY
  when :date_time
    DataType::SHORT_DATE_TIME
  when :boolean
    DataType::BOOLEAN
  when :binary
    DataType::BINARY
  when :guid
    DataType::GUID
  else
    raise InvalidTypeError, "Unknown type: #{type_sym}"
  end
end

.to_java(value) ⇒ Object

Convert Ruby types to Java types



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# File 'lib/jackcess/type_converter.rb', line 36

def to_java(value)
  return nil if value.nil?

  case value
  when String
    value.to_java
  when Integer
    # Use appropriate Java type based on value range
    if value >= -2_147_483_648 && value <= 2_147_483_647
      java.lang.Integer.new(value)
    else
      java.lang.Long.new(value)
    end
  when Float
    java.lang.Double.new(value)
  when TrueClass, FalseClass
    java.lang.Boolean.new(value)
  when Time
    java.util.Date.new((value.to_f * 1000).to_i)
  when Date
    # Convert Ruby Date to Time first, then to Java Date
    java.util.Date.new((value.to_time.to_f * 1000).to_i)
  when BigDecimal
    java.math.BigDecimal.new(value.to_s)
  else
    value
  end
end