How to use

analyzeQuery

method

in

com.google.cloud.spanner.ReadContext

/**
 * Analyzes the query in {@code context}. {@code statement.analyzeQuery(context, queryMode)} is
 * exactly equivalent to {@code context.analyzeQuery(statement, queryMode)}.
 *
 * @see ReadContext#analyzeQuery(Statement, com.google.cloud.spanner.ReadContext.QueryAnalyzeMode)
 */
public ResultSet analyzeQuery(ReadContext context, QueryAnalyzeMode queryMode) {
 return context.analyzeQuery(this, queryMode);
}

@Override
public ResultSet analyzeQuery(Statement statement, QueryAnalyzeMode queryMode) {
 return wrap(delegate.analyzeQuery(statement, queryMode));
}

 ResultSetStats analyzeQuery() {
  // [START read_context_analyze_query]
  ReadContext rc = dbClient.singleUse();
  ResultSet resultSet =
    rc.analyzeQuery(
      Statement.of("SELECT SingerId, AlbumId, MarketingBudget FROM Albums"),
      ReadContext.QueryAnalyzeMode.PROFILE);
  while (resultSet.next()) {
   // Discard the results. We're only processing because getStats() below requires it.
   resultSet.getCurrentRowAsStruct();
  }
  ResultSetStats stats = resultSet.getStats();
  // [END read_context_analyze_query]
  return stats;
 }
}

/**
 * Analyzes the query in {@code context}. {@code statement.analyzeQuery(context, queryMode)} is
 * exactly equivalent to {@code context.analyzeQuery(statement, queryMode)}.
 *
 * @see ReadContext#analyzeQuery(Statement, com.google.cloud.spanner.ReadContext.QueryAnalyzeMode)
 */
public ResultSet analyzeQuery(ReadContext context, QueryAnalyzeMode queryMode) {
 return context.analyzeQuery(this, queryMode);
}

@Override
public ResultSet analyzeQuery(Statement statement, QueryAnalyzeMode queryAnalyzeMode) {
  return targetTransactionContext.analyzeQuery(statement, queryAnalyzeMode);
}

@Override
public ResultSet analyzeQuery(Statement statement, QueryAnalyzeMode queryAnalyzeMode) {
  return targetTransactionContext.analyzeQuery(statement, queryAnalyzeMode);
}

@Override
public ResultSet analyzeQuery(Statement statement, QueryAnalyzeMode queryMode) {
 return wrap(delegate.analyzeQuery(statement, queryMode));
}