search command

Search is a sample web server that uses Cloud Bigtable as the storage layer for a simple document-storage and full-text-search service. It has four functions:

• Initialize and clear the table.
• Add a document. This adds the content of a user-supplied document to the Bigtable, and adds references to the document to an index in the Bigtable. The document is indexed under each unique word in the document.
• Search the index. This returns documents containing each word in a user query, with snippets and links to view the whole document.
• Copy table. This copies the documents and index from another table and adds them to the current one.