io.reactiverse.pgclient.impl.PgPreparedQueryImpl.java Source code

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Here is the source code for io.reactiverse.pgclient.impl.PgPreparedQueryImpl.java

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/*
 * Copyright (C) 2017 Julien Viet
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package io.reactiverse.pgclient.impl;

import io.reactiverse.pgclient.*;
import io.vertx.core.*;

import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.function.Function;
import java.util.stream.Collector;

/**
 * @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
 */
class PgPreparedQueryImpl implements PgPreparedQuery {

    private final Connection conn;
    private final Context context;
    private final PreparedStatement ps;
    private final AtomicBoolean closed = new AtomicBoolean();

    PgPreparedQueryImpl(Connection conn, Context context, PreparedStatement ps) {
        this.conn = conn;
        this.context = context;
        this.ps = ps;
    }

    @Override
    public PgPreparedQuery execute(Tuple args, Handler<AsyncResult<PgRowSet>> handler) {
        return execute(args, false, PgRowSetImpl.FACTORY, PgRowSetImpl.COLLECTOR, handler);
    }

    @Override
    public <R> PgPreparedQuery execute(Tuple args, Collector<Row, ?, R> collector,
            Handler<AsyncResult<PgResult<R>>> handler) {
        return execute(args, true, PgResultImpl::new, collector, handler);
    }

    private <R1, R2 extends PgResultBase<R1, R2>, R3 extends PgResult<R1>> PgPreparedQuery execute(Tuple args,
            boolean singleton, Function<R1, R2> factory, Collector<Row, ?, R1> collector,
            Handler<AsyncResult<R3>> handler) {
        PgResultBuilder<R1, R2, R3> b = new PgResultBuilder<>(factory, handler);
        return execute(args, 0, null, false, singleton, collector, b, b);
    }

    <A, R> PgPreparedQuery execute(Tuple args, int fetch, String portal, boolean suspended, boolean singleton,
            Collector<Row, A, R> collector, QueryResultHandler<R> resultHandler,
            Handler<AsyncResult<Boolean>> handler) {
        if (context == Vertx.currentContext()) {
            String msg = ps.prepare((List<Object>) args);
            if (msg != null) {
                handler.handle(Future.failedFuture(msg));
            } else {
                ExtendedQueryCommand cmd = new ExtendedQueryCommand<>(ps, args, fetch, portal, suspended, singleton,
                        collector, resultHandler);
                cmd.handler = handler;
                conn.schedule(cmd);
            }
        } else {
            context.runOnContext(
                    v -> execute(args, fetch, portal, suspended, singleton, collector, resultHandler, handler));
        }
        return this;
    }

    @Override
    public PgCursor cursor(Tuple args) {
        String msg = ps.prepare((List<Object>) args);
        if (msg != null) {
            throw new IllegalArgumentException(msg);
        }
        return new PgCursorImpl(this, args);
    }

    @Override
    public void close() {
        close(ar -> {
        });
    }

    public PgPreparedQuery batch(List<Tuple> argsList, Handler<AsyncResult<PgRowSet>> handler) {
        return batch(argsList, false, PgRowSetImpl.FACTORY, PgRowSetImpl.COLLECTOR, handler);
    }

    @Override
    public <R> PgPreparedQuery batch(List<Tuple> argsList, Collector<Row, ?, R> collector,
            Handler<AsyncResult<PgResult<R>>> handler) {
        return batch(argsList, true, PgResultImpl::new, collector, handler);
    }

    private <R1, R2 extends PgResultBase<R1, R2>, R3 extends PgResult<R1>> PgPreparedQuery batch(
            List<Tuple> argsList, boolean singleton, Function<R1, R2> factory, Collector<Row, ?, R1> collector,
            Handler<AsyncResult<R3>> handler) {
        for (Tuple args : argsList) {
            String msg = ps.prepare((List<Object>) args);
            if (msg != null) {
                handler.handle(Future.failedFuture(msg));
                return this;
            }
        }
        PgResultBuilder<R1, R2, R3> b = new PgResultBuilder<>(factory, handler);
        ExtendedBatchQueryCommand cmd = new ExtendedBatchQueryCommand<>(ps, argsList, singleton, collector, b);
        cmd.handler = b;
        conn.schedule(cmd);
        return this;
    }

    @Override
    public PgStream<Row> createStream(int fetch, Tuple args) {
        return new PgStreamImpl(this, fetch, args);
    }

    @Override
    public void close(Handler<AsyncResult<Void>> completionHandler) {
        if (closed.compareAndSet(false, true)) {
            CloseStatementCommand cmd = new CloseStatementCommand();
            cmd.handler = completionHandler;
            conn.schedule(cmd);
        } else {
            completionHandler.handle(Future.failedFuture("Already closed"));
        }
    }

    void closePortal(String portal, Handler<AsyncResult<Void>> handler) {
        ClosePortalCommand cmd = new ClosePortalCommand(portal);
        cmd.handler = handler;
        conn.schedule(cmd);
    }

}