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@@ -34,4 +34,5 @@ Collate: | |
'serialize.R' | ||
'sparkR.R' | ||
'stats.R' | ||
'types.R' | ||
'utils.R' |
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# Licensed to the Apache Software Foundation (ASF) under one or more | ||
# contributor license agreements. See the NOTICE file distributed with | ||
# this work for additional information regarding copyright ownership. | ||
# The ASF licenses this file to You under the Apache License, Version 2.0 | ||
# (the "License"); you may not use this file except in compliance with | ||
# the License. You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
# | ||
# types.R. This file handles the data type mapping between Spark and R | ||
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# The primitive data types, where names(PRIMITIVE_TYPES) are Scala types whereas | ||
# values are equivalent R types. This is stored in an environment to allow for | ||
# more efficient look up (environments use hashmaps). | ||
PRIMITIVE_TYPES <- as.environment(list( | ||
"byte"="integer", | ||
"tinyint"="integer", | ||
"smallint"="integer", | ||
"integer"="integer", | ||
"bigint"="numeric", | ||
"float"="numeric", | ||
"double"="numeric", | ||
"decimal"="numeric", | ||
"string"="character", | ||
"binary"="raw", | ||
"boolean"="logical", | ||
"timestamp"="POSIXct", | ||
"date"="Date")) | ||
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# The complex data types. These do not have any direct mapping to R's types. | ||
COMPLEX_TYPES <- list( | ||
"map"=NA, | ||
"array"=NA, | ||
"struct"=NA) | ||
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# The full list of data types. | ||
DATA_TYPES <- as.environment(c(as.list(PRIMITIVE_TYPES), COMPLEX_TYPES)) |
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