/
PostgresqlBatch.java
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/
PostgresqlBatch.java
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/*
* Copyright 2017 the original author or authors.
*
* 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
*
* https://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.r2dbc.postgresql;
import io.r2dbc.postgresql.util.Assert;
import io.r2dbc.spi.Batch;
import reactor.core.publisher.Flux;
import java.util.ArrayList;
import java.util.List;
/**
* An implementation of {@link Batch} for executing a collection of statements in a batch against a PostgreSQL database.
*/
final class PostgresqlBatch implements io.r2dbc.postgresql.api.PostgresqlBatch {
private final ConnectionResources context;
private final List<String> statements = new ArrayList<>();
PostgresqlBatch(ConnectionResources context) {
this.context = Assert.requireNonNull(context, "context must not be null");
}
@Override
public PostgresqlBatch add(String sql) {
Assert.requireNonNull(sql, "sql must not be null");
if (!(PostgresqlSqlParser.tokenize(sql).getParameterCount() == 0)) {
throw new IllegalArgumentException(String.format("Statement '%s' is not supported. This is often due to the presence of parameters.", sql));
}
this.statements.add(sql);
return this;
}
@Override
public Flux<io.r2dbc.postgresql.api.PostgresqlResult> execute() {
return new PostgresqlStatement(this.context, String.join("; ", this.statements))
.execute();
}
@Override
public String toString() {
return "PostgresqlBatch{" +
"context=" + this.context +
", statements=" + this.statements +
'}';
}
}