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com.querydsl.sql.dml.AbstractSQLInsertClause Maven / Gradle / Ivy
/*
* Copyright 2015, The Querydsl Team (http://www.querydsl.com/team)
*
* 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 com.querydsl.sql.dml;
import com.querydsl.core.DefaultQueryMetadata;
import com.querydsl.core.JoinType;
import com.querydsl.core.QueryFlag;
import com.querydsl.core.QueryFlag.Position;
import com.querydsl.core.QueryMetadata;
import com.querydsl.core.dml.InsertClause;
import com.querydsl.core.types.*;
import com.querydsl.core.util.CollectionUtils;
import com.querydsl.core.util.ResultSetAdapter;
import com.querydsl.sql.*;
import com.querydsl.sql.types.Null;
import java.sql.*;
import java.util.*;
import java.util.function.Supplier;
import java.util.logging.Logger;
import org.jetbrains.annotations.Nullable;
/**
* Provides a base class for dialect-specific INSERT clauses.
*
* @author tiwe
* @param The type extending this class.
*/
public abstract class AbstractSQLInsertClause>
extends AbstractSQLClause implements InsertClause {
protected static final Logger logger = Logger.getLogger(AbstractSQLInsertClause.class.getName());
protected final RelationalPath entity;
protected final QueryMetadata metadata = new DefaultQueryMetadata();
@Nullable protected SubQueryExpression subQuery;
@Nullable protected SQLQuery subQueryBuilder;
protected final List batches = new ArrayList();
protected final List> columns = new ArrayList>();
protected final List> values = new ArrayList>();
protected transient String queryString;
protected transient List constants;
protected transient boolean batchToBulk;
public AbstractSQLInsertClause(
Connection connection,
Configuration configuration,
RelationalPath entity,
SQLQuery subQuery) {
this(connection, configuration, entity);
this.subQueryBuilder = subQuery;
}
public AbstractSQLInsertClause(
Connection connection, Configuration configuration, RelationalPath entity) {
super(configuration, connection);
this.entity = entity;
metadata.addJoin(JoinType.DEFAULT, entity);
}
public AbstractSQLInsertClause(
Supplier connection,
Configuration configuration,
RelationalPath entity,
SQLQuery subQuery) {
this(connection, configuration, entity);
this.subQueryBuilder = subQuery;
}
public AbstractSQLInsertClause(
Supplier connection, Configuration configuration, RelationalPath entity) {
super(configuration, connection);
this.entity = entity;
metadata.addJoin(JoinType.DEFAULT, entity);
}
/**
* Add the given String literal at the given position as a query flag
*
* @param position position
* @param flag query flag
* @return the current object
*/
public C addFlag(Position position, String flag) {
metadata.addFlag(new QueryFlag(position, flag));
return (C) this;
}
/**
* Add the given Expression at the given position as a query flag
*
* @param position position
* @param flag query flag
* @return the current object
*/
public C addFlag(Position position, Expression flag) {
metadata.addFlag(new QueryFlag(position, flag));
return (C) this;
}
/**
* Add the current state of bindings as a batch item
*
* @return the current object
*/
public C addBatch() {
if (subQueryBuilder != null) {
subQuery = subQueryBuilder.select(values.toArray(new Expression[0])).clone();
values.clear();
}
batches.add(new SQLInsertBatch(columns, values, subQuery));
columns.clear();
values.clear();
subQuery = null;
return (C) this;
}
/**
* Set whether batches should be optimized into a single bulk operation. Will revert to batches,
* if bulk is not supported
*/
public void setBatchToBulk(boolean b) {
this.batchToBulk = b && configuration.getTemplates().isBatchToBulkSupported();
}
@Override
public void clear() {
batches.clear();
columns.clear();
values.clear();
subQuery = null;
}
@Override
public C columns(Path... columns) {
this.columns.addAll(Arrays.asList(columns));
return (C) this;
}
/**
* Execute the clause and return the generated key with the type of the given path. If no rows
* were created, null is returned, otherwise the key of the first row is returned.
*
* @param
* @param path path for key
* @return generated key
*/
@SuppressWarnings("unchecked")
@Nullable
public T executeWithKey(Path path) {
return executeWithKey((Class) path.getType(), path);
}
/**
* Execute the clause and return the generated key cast to the given type. If no rows were
* created, null is returned, otherwise the key of the first row is returned.
*
* @param
* @param type type of key
* @return generated key
*/
public T executeWithKey(Class type) {
return executeWithKey(type, null);
}
protected T executeWithKey(Class type, @Nullable Path path) {
ResultSet rs = null;
try {
rs = executeWithKeys();
if (rs.next()) {
return configuration.get(rs, path, 1, type);
} else {
return null;
}
} catch (SQLException e) {
throw configuration.translate(e);
} finally {
if (rs != null) {
close(rs);
}
reset();
}
}
/**
* Execute the clause and return the generated key with the type of the given path. If no rows
* were created, or the referenced column is not a generated key, null is returned. Otherwise, the
* key of the first row is returned.
*
* @param
* @param path path for key
* @return generated keys
*/
@SuppressWarnings("unchecked")
public List executeWithKeys(Path path) {
return executeWithKeys((Class) path.getType(), path);
}
public List executeWithKeys(Class type) {
return executeWithKeys(type, null);
}
protected List executeWithKeys(Class type, @Nullable Path path) {
ResultSet rs = null;
try {
rs = executeWithKeys();
List rv = new ArrayList();
while (rs.next()) {
rv.add(configuration.get(rs, path, 1, type));
}
return rv;
} catch (SQLException e) {
throw configuration.translate(e);
} finally {
if (rs != null) {
close(rs);
}
reset();
}
}
protected PreparedStatement createStatement(boolean withKeys) throws SQLException {
listeners.preRender(context);
SQLSerializer serializer = createSerializer();
if (subQueryBuilder != null) {
subQuery = subQueryBuilder.select(values.toArray(new Expression[0])).clone();
values.clear();
}
if (!batches.isEmpty() && batchToBulk) {
serializer.serializeInsert(metadata, entity, batches);
} else {
serializer.serializeInsert(metadata, entity, columns, values, subQuery);
}
context.addSQL(createBindings(metadata, serializer));
listeners.rendered(context);
return prepareStatementAndSetParameters(serializer, withKeys);
}
protected Collection createStatements(boolean withKeys) throws SQLException {
boolean addBatches = !configuration.getUseLiterals();
listeners.preRender(context);
if (subQueryBuilder != null) {
subQuery = subQueryBuilder.select(values.toArray(new Expression[0])).clone();
values.clear();
}
Map stmts = new HashMap<>();
// add first batch
SQLSerializer serializer = createSerializer();
serializer.serializeInsert(
metadata,
entity,
batches.get(0).getColumns(),
batches.get(0).getValues(),
batches.get(0).getSubQuery());
PreparedStatement stmt = prepareStatementAndSetParameters(serializer, withKeys);
if (addBatches) {
stmt.addBatch();
}
stmts.put(serializer.toString(), stmt);
context.addSQL(createBindings(metadata, serializer));
listeners.rendered(context);
// add other batches
for (int i = 1; i < batches.size(); i++) {
SQLInsertBatch batch = batches.get(i);
listeners.preRender(context);
serializer = createSerializer();
serializer.serializeInsert(
metadata, entity, batch.getColumns(), batch.getValues(), batch.getSubQuery());
context.addSQL(createBindings(metadata, serializer));
listeners.rendered(context);
stmt = stmts.get(serializer.toString());
if (stmt == null) {
stmt = prepareStatementAndSetParameters(serializer, withKeys);
stmts.put(serializer.toString(), stmt);
} else {
setParameters(
stmt, serializer.getConstants(), serializer.getConstantPaths(), metadata.getParams());
}
if (addBatches) {
stmt.addBatch();
}
}
return stmts.values();
}
protected PreparedStatement prepareStatementAndSetParameters(
SQLSerializer serializer, boolean withKeys) throws SQLException {
listeners.prePrepare(context);
queryString = serializer.toString();
constants = serializer.getConstants();
logQuery(logger, queryString, constants);
PreparedStatement stmt;
if (withKeys) {
if (entity.getPrimaryKey() != null) {
String[] target = new String[entity.getPrimaryKey().getLocalColumns().size()];
for (int i = 0; i < target.length; i++) {
Path path = entity.getPrimaryKey().getLocalColumns().get(i);
String column = ColumnMetadata.getName(path);
column = configuration.getColumnOverride(entity.getSchemaAndTable(), column);
target[i] = column;
}
stmt = connection().prepareStatement(queryString, target);
} else {
stmt = connection().prepareStatement(queryString, Statement.RETURN_GENERATED_KEYS);
}
} else {
stmt = connection().prepareStatement(queryString);
}
setParameters(
stmt, serializer.getConstants(), serializer.getConstantPaths(), metadata.getParams());
context.addPreparedStatement(stmt);
listeners.prepared(context);
return stmt;
}
/**
* Execute the clause and return the generated keys as a ResultSet
*
* @return result set with generated keys
*/
public ResultSet executeWithKeys() {
context = startContext(connection(), metadata, entity);
try {
PreparedStatement stmt = null;
if (batches.isEmpty()) {
stmt = createStatement(true);
listeners.notifyInsert(entity, metadata, columns, values, subQuery);
listeners.preExecute(context);
stmt.executeUpdate();
listeners.executed(context);
} else if (batchToBulk) {
stmt = createStatement(true);
listeners.notifyInserts(entity, metadata, batches);
listeners.preExecute(context);
stmt.executeUpdate();
listeners.executed(context);
} else {
Collection stmts = createStatements(true);
if (stmts != null && stmts.size() > 1) {
throw new IllegalStateException(
"executeWithKeys called with batch statement and multiple SQL strings");
}
stmt = stmts.iterator().next();
listeners.notifyInserts(entity, metadata, batches);
listeners.preExecute(context);
stmt.executeBatch();
listeners.executed(context);
}
final Statement stmt2 = stmt;
ResultSet rs = stmt.getGeneratedKeys();
return new ResultSetAdapter(rs) {
@Override
public void close() throws SQLException {
try {
super.close();
} finally {
stmt2.close();
reset();
endContext(context);
}
}
};
} catch (SQLException e) {
onException(context, e);
reset();
endContext(context);
throw configuration.translate(queryString, constants, e);
}
}
@Override
public long execute() {
context = startContext(connection(), metadata, entity);
PreparedStatement stmt = null;
Collection stmts = null;
try {
if (batches.isEmpty()) {
stmt = createStatement(false);
listeners.notifyInsert(entity, metadata, columns, values, subQuery);
listeners.preExecute(context);
int rc = stmt.executeUpdate();
listeners.executed(context);
return rc;
} else if (batchToBulk) {
stmt = createStatement(false);
listeners.notifyInserts(entity, metadata, batches);
listeners.preExecute(context);
int rc = stmt.executeUpdate();
listeners.executed(context);
return rc;
} else {
stmts = createStatements(false);
listeners.notifyInserts(entity, metadata, batches);
listeners.preExecute(context);
long rc = executeBatch(stmts);
listeners.executed(context);
return rc;
}
} catch (SQLException e) {
onException(context, e);
throw configuration.translate(queryString, constants, e);
} finally {
if (stmt != null) {
close(stmt);
}
if (stmts != null) {
close(stmts);
}
reset();
endContext(context);
}
}
@Override
public List getSQL() {
if (batches.isEmpty()) {
SQLSerializer serializer = createSerializer();
serializer.serializeInsert(metadata, entity, columns, values, subQuery);
return Collections.singletonList(createBindings(metadata, serializer));
} else if (batchToBulk) {
SQLSerializer serializer = createSerializer();
serializer.serializeInsert(metadata, entity, batches);
return Collections.singletonList(createBindings(metadata, serializer));
} else {
List builder = new ArrayList<>();
for (SQLInsertBatch batch : batches) {
SQLSerializer serializer = createSerializer();
serializer.serializeInsert(
metadata, entity, batch.getColumns(), batch.getValues(), batch.getSubQuery());
builder.add(createBindings(metadata, serializer));
}
return CollectionUtils.unmodifiableList(builder);
}
}
@Override
public C select(SubQueryExpression sq) {
subQuery = sq;
for (Map.Entry, Object> entry : sq.getMetadata().getParams().entrySet()) {
metadata.setParam((ParamExpression) entry.getKey(), entry.getValue());
}
return (C) this;
}
@Override
public C set(Path path, T value) {
columns.add(path);
if (value instanceof Expression) {
values.add((Expression) value);
} else if (value != null) {
values.add(ConstantImpl.create(value));
} else {
values.add(Null.CONSTANT);
}
return (C) this;
}
@Override
public C set(Path path, Expression expression) {
columns.add(path);
values.add(expression);
return (C) this;
}
@Override
public C setNull(Path path) {
columns.add(path);
values.add(Null.CONSTANT);
return (C) this;
}
@Override
public C values(Object... v) {
for (Object value : v) {
if (value instanceof Expression) {
values.add((Expression) value);
} else if (value != null) {
values.add(ConstantImpl.create(value));
} else {
values.add(Null.CONSTANT);
}
}
return (C) this;
}
@Override
public String toString() {
SQLSerializer serializer = createSerializer();
if (!batches.isEmpty() && batchToBulk) {
serializer.serializeInsert(metadata, entity, batches);
} else {
serializer.serializeInsert(metadata, entity, columns, values, subQuery);
}
return serializer.toString();
}
/**
* Populate the INSERT clause with the properties of the given bean. The properties need to match
* the fields of the clause's entity instance.
*
* @param bean bean to use for population
* @return the current object
*/
public C populate(Object bean) {
return populate(bean, DefaultMapper.DEFAULT);
}
/**
* Populate the INSERT clause with the properties of the given bean using the given Mapper.
*
* @param obj object to use for population
* @param mapper mapper to use
* @return the current object
*/
@SuppressWarnings("rawtypes")
public C populate(T obj, Mapper mapper) {
Map, Object> values = mapper.createMap(entity, obj);
for (Map.Entry, Object> entry : values.entrySet()) {
set((Path) entry.getKey(), entry.getValue());
}
return (C) this;
}
@Override
public boolean isEmpty() {
return values.isEmpty() && batches.isEmpty();
}
@Override
public int getBatchCount() {
return batches.size();
}
}
