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chore: generate README from synth.py (#173)
* chore: generate the README via synth.py * restore transport section
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| custom_content: | | ||
| #### Calling Cloud Spanner | ||
| Here is a code snippet showing a simple usage example. Add the following imports | ||
| at the top of your file: | ||
| ```java | ||
| import com.google.cloud.spanner.DatabaseClient; | ||
| import com.google.cloud.spanner.DatabaseId; | ||
| import com.google.cloud.spanner.ResultSet; | ||
| import com.google.cloud.spanner.Spanner; | ||
| import com.google.cloud.spanner.SpannerOptions; | ||
| import com.google.cloud.spanner.Statement; | ||
| ``` | ||
| Then, to make a query to Spanner, use the following code: | ||
| ```java | ||
| // Instantiates a client | ||
| SpannerOptions options = SpannerOptions.newBuilder().build(); | ||
| Spanner spanner = options.getService(); | ||
| String instance = "my-instance"; | ||
| String database = "my-database"; | ||
| try { | ||
| // Creates a database client | ||
| DatabaseClient dbClient = spanner.getDatabaseClient( | ||
| DatabaseId.of(options.getProjectId(), instance, database)); | ||
| // Queries the database | ||
| try (ResultSet resultSet = dbClient.singleUse().executeQuery(Statement.of("SELECT 1"))) { | ||
| // Prints the results | ||
| while (resultSet.next()) { | ||
| System.out.printf("%d\n", resultSet.getLong(0)); | ||
| } | ||
| } | ||
| } finally { | ||
| // Closes the client which will free up the resources used | ||
| spanner.close(); | ||
| } | ||
| ``` | ||
| #### Complete source code | ||
| In [DatabaseSelect.java](https://github.com/googleapis/google-cloud-java/tree/master/google-cloud-examples/src/main/java/com/google/cloud/examples/spanner/snippets/DatabaseSelect.java) we put together all the code shown above in a single program. |
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