Elasticsearch: Java: Search API

Search API is used to execute a search query and get back search hits that match the query. You can execute search query across more than one index and types. You can built a query using Query API (or) filter API. Later post explains how to use Query and filter apis. In this post I am going to explain how to get all the documents

         a. from a cluster

         b. from given index

         c. from given indexes

         d. from given indexes and types etc.,

Return all documents from a cluster

public static SearchResponse getAllDocuemnts(Client client) {

         Preconditions.checkNotNull(client, "client shouldn't be null");

         return client.prepareSearch().execute().actionGet();

}

Return all documents from given indices

public static SearchResponse getAllDocuments(Client client,

                           String... indices) {

         Preconditions.checkNotNull(client, "client shouldn't be null");

         Preconditions.checkNotNull(indices, "indeices shouldn't be null");

         return client.prepareSearch(indices).execute().actionGet();

}

Return all documents from given indexes and types

public static SearchResponse getAllDocuments(Client client,String[] indices, String[] types) {

         Preconditions.checkNotNull(client, "client shouldn't be null");

         Preconditions.checkNotNull(indices, "indeices shouldn't be null");

         Preconditions.checkNotNull(types, "types shouldn't be null");

                 

         return client.prepareSearch(indices).setTypes(types).execute().actionGet();

}

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