Examples with DatabaseEstimates org.voltdb.compiler.DatabaseEstimates used on opensource projects

Example 1 with DatabaseEstimates

use of org.voltdb.compiler.DatabaseEstimates in project voltdb by VoltDB.

the class PlannerTestAideDeCamp method compile.

/**
     * Compile and cache the statement and plan and return the final plan graph.
     */
private List<AbstractPlanNode> compile(String sql, int paramCount, String joinOrder, boolean inferPartitioning, boolean forceSingle, DeterminismMode detMode) {
    String stmtLabel = "stmt-" + String.valueOf(compileCounter++);
    Statement catalogStmt = proc.getStatements().add(stmtLabel);
    catalogStmt.setSqltext(sql);
    catalogStmt.setSinglepartition(forceSingle);
    // determine the type of the query
    QueryType qtype = QueryType.SELECT;
    catalogStmt.setReadonly(true);
    if (sql.toLowerCase().startsWith("insert")) {
        qtype = QueryType.INSERT;
        catalogStmt.setReadonly(false);
    }
    if (sql.toLowerCase().startsWith("update")) {
        qtype = QueryType.UPDATE;
        catalogStmt.setReadonly(false);
    }
    if (sql.toLowerCase().startsWith("delete")) {
        qtype = QueryType.DELETE;
        catalogStmt.setReadonly(false);
    }
    catalogStmt.setQuerytype(qtype.getValue());
    // name will look like "basename-stmt-#"
    String name = catalogStmt.getParent().getTypeName() + "-" + catalogStmt.getTypeName();
    DatabaseEstimates estimates = new DatabaseEstimates();
    TrivialCostModel costModel = new TrivialCostModel();
    StatementPartitioning partitioning;
    if (inferPartitioning) {
        partitioning = StatementPartitioning.inferPartitioning();
    } else if (forceSingle) {
        partitioning = StatementPartitioning.forceSP();
    } else {
        partitioning = StatementPartitioning.forceMP();
    }
    String procName = catalogStmt.getParent().getTypeName();
    QueryPlanner planner = new QueryPlanner(sql, stmtLabel, procName, db, partitioning, hsql, estimates, false, StatementCompiler.DEFAULT_MAX_JOIN_TABLES, costModel, null, joinOrder, detMode);
    CompiledPlan plan = null;
    planner.parse();
    plan = planner.plan();
    assert (plan != null);
    // Partitioning optionally inferred from the planning process.
    if (partitioning.isInferred()) {
        catalogStmt.setSinglepartition(partitioning.isInferredSingle());
    }
    // We will need to update the system catalogs with this new information
    for (int i = 0; i < plan.parameters.length; ++i) {
        StmtParameter catalogParam = catalogStmt.getParameters().add(String.valueOf(i));
        ParameterValueExpression pve = plan.parameters[i];
        catalogParam.setJavatype(pve.getValueType().getValue());
        catalogParam.setIsarray(pve.getParamIsVector());
        catalogParam.setIndex(i);
    }
    List<PlanNodeList> nodeLists = new ArrayList<>();
    nodeLists.add(new PlanNodeList(plan.rootPlanGraph));
    if (plan.subPlanGraph != null) {
        nodeLists.add(new PlanNodeList(plan.subPlanGraph));
    }
    // Now update our catalog information
    // HACK: We're using the node_tree's hashCode() as it's name. It would be really
    //     nice if the Catalog code give us an guid without needing a name first...
    String json = null;
    try {
        JSONObject jobj = new JSONObject(nodeLists.get(0).toJSONString());
        json = jobj.toString(4);
    } catch (JSONException e2) {
        // TODO Auto-generated catch block
        e2.printStackTrace();
        System.exit(-1);
        return null;
    }
    //
    try {
        BuildDirectoryUtils.writeFile("statement-plans", name + "_json.txt", json, true);
        BuildDirectoryUtils.writeFile("statement-plans", name + ".dot", nodeLists.get(0).toDOTString("name"), true);
    } catch (Exception e) {
        e.printStackTrace();
    }
    List<AbstractPlanNode> plannodes = new ArrayList<>();
    for (PlanNodeList nodeList : nodeLists) {
        plannodes.add(nodeList.getRootPlanNode());
    }
    m_currentPlan = plan;
    return plannodes;
}