Pro Couchbase Development by Deepak Vohra

Author:Deepak Vohra
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA

If the get method is invoked on key not defined in the Couchbase Server the Couchbase::Error::NotFound error is generated. To demonstrate delete the document with ID catalog2 and run the following script.

require 'rubygems'

require 'couchbase'

client = Couchbase.connect(" http://127.0.0.1:8091 ")

print client.get("catalog2")

The Couchbase::Error::NotFound error gets generated as shown in Figure 5-28.

Figure 5-28.Couchbase::Error::NotFound error

Updating a Document

The replace method may be used to replace a key-value pair. The set method may also be used to update the value of a key already in the server to a new value. The replace method has the following signature.

object.replace(key, value [, ruby-replace-options ])

The replace method returns the CAS value of the object stored as a fixed number. The method args are discussed in Table 5-3.Table 5-3.The replace method Arguments

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