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com.mysema.query.sql.DetachableSQLQuery Maven / Gradle / Ivy
/*
* Copyright 2011, Mysema Ltd
*
* 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.mysema.query.sql;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import com.google.common.collect.ImmutableList;
import com.infradna.tool.bridge_method_injector.WithBridgeMethods;
import com.mysema.query.DefaultQueryMetadata;
import com.mysema.query.JoinFlag;
import com.mysema.query.QueryFlag;
import com.mysema.query.QueryFlag.Position;
import com.mysema.query.QueryMetadata;
import com.mysema.query.support.DetachableQuery;
import com.mysema.query.support.Expressions;
import com.mysema.query.support.QueryMixin;
import com.mysema.query.types.CollectionExpression;
import com.mysema.query.types.EntityPath;
import com.mysema.query.types.Expression;
import com.mysema.query.types.ExpressionUtils;
import com.mysema.query.types.OperationImpl;
import com.mysema.query.types.Operator;
import com.mysema.query.types.ParamExpression;
import com.mysema.query.types.ParamNotSetException;
import com.mysema.query.types.Path;
import com.mysema.query.types.Predicate;
import com.mysema.query.types.SubQueryExpression;
import com.mysema.query.types.TemplateExpressionImpl;
import com.mysema.query.types.expr.BooleanExpression;
import com.mysema.query.types.expr.CollectionExpressionBase;
import com.mysema.query.types.expr.CollectionOperation;
import com.mysema.query.types.query.ListSubQuery;
import com.mysema.query.types.template.NumberTemplate;
/**
* Abstract superclass for SubQuery implementations
*
* @author tiwe
*
*/
public abstract class DetachableSQLQuery> extends DetachableQuery implements SQLCommonQuery {
protected final Configuration configuration;
public DetachableSQLQuery() {
this(new DefaultQueryMetadata().noValidate());
}
public DetachableSQLQuery(QueryMetadata metadata) {
this(Configuration.DEFAULT, metadata);
}
@SuppressWarnings("unchecked")
public DetachableSQLQuery(Configuration configuration, QueryMetadata metadata) {
super(new QueryMixin(metadata));
this.queryMixin.setSelf((Q)this);
this.configuration = configuration;
}
/**
* Add the given prefix and expression as a general query flag
*
* @param position position of the flag
* @param prefix prefix for the flag
* @param expr expression of the flag
* @return
*/
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q addFlag(Position position, String prefix, Expression expr) {
Expression flag = TemplateExpressionImpl.create(expr.getType(), prefix + "{0}", expr);
return queryMixin.addFlag(new QueryFlag(position, flag));
}
/**
* Add the given String literal as a query flag
*
* @param position
* @param flag
* @return
*/
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q addFlag(Position position, String flag) {
return queryMixin.addFlag(new QueryFlag(position, flag));
}
/**
* Add the given Expression as a query flag
*
* @param position
* @param flag
* @return
*/
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q addFlag(Position position, Expression flag) {
return queryMixin.addFlag(new QueryFlag(position, flag));
}
/**
* Add the given String literal as a join flag to the last added join with the
* position BEFORE_TARGET
*
* @param flag
* @return
*/
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q addJoinFlag(String flag) {
return addJoinFlag(flag, JoinFlag.Position.BEFORE_TARGET);
}
/**
* Add the given String literal as a join flag to the last added join
*
* @param flag
* @param position
* @return
*/
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
@SuppressWarnings("unchecked")
public Q addJoinFlag(String flag, JoinFlag.Position position) {
queryMixin.addJoinFlag(new JoinFlag(flag, position));
return (Q)this;
}
@Override
public BooleanExpression exists() {
return unique(NumberTemplate.ONE).exists();
}
@Override
public BooleanExpression notExists() {
return exists().not();
}
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q from(Expression arg) {
return queryMixin.from(arg);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q from(Expression... args) {
return queryMixin.from(args);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
@SuppressWarnings({ "unchecked", "rawtypes" })
public Q from(SubQueryExpression subQuery, Path alias) {
return queryMixin.from(ExpressionUtils.as((Expression)subQuery, alias));
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q fullJoin(EntityPath target) {
return queryMixin.fullJoin(target);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q fullJoin(RelationalFunctionCall target, Path alias) {
return queryMixin.fullJoin(target, alias);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q fullJoin(ForeignKey key, RelationalPath entity) {
return queryMixin.fullJoin(entity).on(key.on(entity));
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q fullJoin(SubQueryExpression target, Path alias) {
return queryMixin.fullJoin(target, alias);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q innerJoin(EntityPath target) {
return queryMixin.innerJoin(target);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q innerJoin(RelationalFunctionCall target, Path alias) {
return queryMixin.innerJoin(target, alias);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q innerJoin(ForeignKey key, RelationalPath entity) {
return queryMixin.innerJoin(entity).on(key.on(entity));
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q innerJoin(SubQueryExpression target, Path alias) {
return queryMixin.innerJoin(target, alias);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q join(EntityPath target) {
return queryMixin.join(target);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q join(RelationalFunctionCall target, Path alias) {
return queryMixin.join(target, alias);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q join(ForeignKey key, RelationalPath entity) {
return queryMixin.join(entity).on(key.on(entity));
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q join(SubQueryExpression target, Path alias) {
return queryMixin.join(target, alias);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q leftJoin(EntityPath target) {
return queryMixin.leftJoin(target);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q leftJoin(RelationalFunctionCall target, Path alias) {
return queryMixin.leftJoin(target, alias);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q leftJoin(ForeignKey key, RelationalPath entity) {
return queryMixin.leftJoin(entity).on(key.on(entity));
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q leftJoin(SubQueryExpression target, Path alias) {
return queryMixin.leftJoin(target, alias);
}
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q on(Predicate condition) {
return queryMixin.on(condition);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q on(Predicate... conditions) {
return queryMixin.on(conditions);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q rightJoin(EntityPath target) {
return queryMixin.rightJoin(target);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q rightJoin(RelationalFunctionCall target, Path alias) {
return queryMixin.fullJoin(target, alias);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q rightJoin(ForeignKey key, RelationalPath entity) {
return queryMixin.rightJoin(entity).on(key.on(entity));
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q rightJoin(SubQueryExpression target, Path alias) {
return queryMixin.rightJoin(target, alias);
}
@SuppressWarnings({ "unchecked", "rawtypes" })
private CollectionExpressionBase union(Operator op, List> sq) {
Expression rv = sq.get(0);
if (sq.size() == 1 && !CollectionExpression.class.isInstance(rv)) {
return new ListSubQuery(rv.getType(), sq.get(0).getMetadata());
} else {
Class elementType = sq.get(0).getType();
if (rv instanceof CollectionExpression) {
elementType = ((CollectionExpression)rv).getParameter(0);
}
for (int i = 1; i < sq.size(); i++) {
rv = CollectionOperation.create(op, (Class)elementType, rv, sq.get(i));
}
return (CollectionExpressionBase)rv;
}
}
public CollectionExpressionBase union(List> sq) {
return union(SQLOps.UNION, sq);
}
public CollectionExpressionBase union(ListSubQuery... sq) {
return union(SQLOps.UNION, Arrays.asList(sq));
}
public CollectionExpressionBase union(SubQueryExpression... sq) {
return union(SQLOps.UNION, Arrays.asList(sq));
}
public CollectionExpressionBase unionAll(List> sq) {
return union(SQLOps.UNION_ALL, sq);
}
public CollectionExpressionBase unionAll(ListSubQuery... sq) {
return union(SQLOps.UNION_ALL, Arrays.asList(sq));
}
public CollectionExpressionBase unionAll(SubQueryExpression... sq) {
return union(SQLOps.UNION_ALL, Arrays.asList(sq));
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q withRecursive(Path alias, SubQueryExpression query) {
queryMixin.addFlag(new QueryFlag(QueryFlag.Position.WITH, SQLTemplates.RECURSIVE));
return with(alias, query);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q withRecursive(Path alias, Expression query) {
queryMixin.addFlag(new QueryFlag(QueryFlag.Position.WITH, SQLTemplates.RECURSIVE));
return with(alias, query);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public WithBuilder withRecursive(Path alias, Path... columns) {
queryMixin.addFlag(new QueryFlag(QueryFlag.Position.WITH, SQLTemplates.RECURSIVE));
return with(alias, columns);
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q with(Path alias, SubQueryExpression target) {
Expression expr = OperationImpl.create(alias.getType(), SQLOps.WITH_ALIAS, alias, target);
return queryMixin.addFlag(new QueryFlag(QueryFlag.Position.WITH, expr));
}
@Override
@WithBridgeMethods(value=AbstractSQLSubQuery.class, castRequired=true)
public Q with(Path alias, Expression query) {
Expression expr = OperationImpl.create(alias.getType(), SQLOps.WITH_ALIAS, alias, query);
return queryMixin.addFlag(new QueryFlag(QueryFlag.Position.WITH, expr));
}
@Override
public WithBuilder with(Path alias, Path... columns) {
Expression columnsCombined = ExpressionUtils.list(Object.class, columns);
Expression aliasCombined = Expressions.operation(alias.getType(), SQLOps.WITH_COLUMNS, alias, columnsCombined);
return new WithBuilder(queryMixin, aliasCombined);
}
public QueryMetadata getMetadata() {
return queryMixin.getMetadata();
}
@Override
public abstract Q clone();
protected abstract SQLSerializer createSerializer();
protected SQLSerializer serialize(boolean forCountRow) {
SQLSerializer serializer = createSerializer();
serializer.setStrict(false);
serializer.serialize(queryMixin.getMetadata(), forCountRow);
return serializer;
}
/**
* Get the query as an SQL query string and bindings
*
* @param exprs
* @return
*/
public SQLBindings getSQL(Expression... exprs) {
queryMixin.addProjection(exprs);
SQLSerializer serializer = serialize(false);
ImmutableList.Builder args = ImmutableList.builder();
Map, Object> params = getMetadata().getParams();
for (Object o : serializer.getConstants()) {
if (o instanceof ParamExpression) {
if (!params.containsKey(o)) {
throw new ParamNotSetException((ParamExpression) o);
}
o = queryMixin.getMetadata().getParams().get(o);
}
args.add(o);
}
return new SQLBindings(serializer.toString(), args.build());
}
@Override
public String toString() {
if (!getMetadata().getJoins().isEmpty()) {
SQLSerializer serializer = serialize(false);
return serializer.toString().trim();
} else {
return super.toString();
}
}
}
