| 1 | var db = require('../db')
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| 2 |
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| 3 | module.exports = function getItem(store, data, cb) {
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| 4 |
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| 5 | store.getTable(data.TableName, function(err, table) {
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| 6 | if (err) return cb(err)
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| 7 |
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| 8 | if ((err = db.validateKey(data.Key, table)) != null) return cb(err)
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| 9 |
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| 10 | if ((err = db.validateKeyPaths((data._projection || {}).nestedPaths, table)) != null) return cb(err)
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| 11 |
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| 12 | var itemDb = store.getItemDb(data.TableName), key = db.createKey(data.Key, table)
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| 13 |
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| 14 | itemDb.get(key, function(err, item) {
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| 15 | if (err && err.name != 'NotFoundError') return cb(err)
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| 16 |
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| 17 | var returnObj = {}, paths = data._projection ? data._projection.paths : data.AttributesToGet
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| 18 |
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| 19 | if (item) {
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| 20 | returnObj.Item = paths ? db.mapPaths(paths, item) : item
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| 21 | }
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| 22 |
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| 23 | returnObj.ConsumedCapacity = db.addConsumedCapacity(data, true, item)
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| 24 |
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| 25 | cb(null, returnObj)
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| 26 | })
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| 27 | })
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| 28 | }
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