--- /dev/null
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\ORM\Query;
+
+/**
+ * An adapter implementation of the TreeWalker interface. The methods in this class
+ * are empty. This class exists as convenience for creating tree walkers.
+ *
+ * @author Roman Borschel <roman@code-factory.org>
+ * @since 2.0
+ */
+abstract class TreeWalkerAdapter implements TreeWalker
+{
+ private $_query;
+ private $_parserResult;
+ private $_queryComponents;
+
+ /**
+ * {@inheritdoc}
+ */
+ public function __construct($query, $parserResult, array $queryComponents)
+ {
+ $this->_query = $query;
+ $this->_parserResult = $parserResult;
+ $this->_queryComponents = $queryComponents;
+ }
+
+ /**
+ * @return array
+ */
+ protected function _getQueryComponents()
+ {
+ return $this->_queryComponents;
+ }
+
+ /**
+ * Retrieve Query Instance reponsible for the current walkers execution.
+ *
+ * @return \Doctrine\ORM\Query
+ */
+ protected function _getQuery()
+ {
+ return $this->_query;
+ }
+
+ /**
+ * Retrieve ParserResult
+ *
+ * @return \Doctrine\ORM\Query\ParserResult
+ */
+ protected function _getParserResult()
+ {
+ return $this->_parserResult;
+ }
+
+ /**
+ * Walks down a SelectStatement AST node, thereby generating the appropriate SQL.
+ *
+ * @return string The SQL.
+ */
+ public function walkSelectStatement(AST\SelectStatement $AST) {}
+
+ /**
+ * Walks down a SelectClause AST node, thereby generating the appropriate SQL.
+ *
+ * @return string The SQL.
+ */
+ public function walkSelectClause($selectClause) {}
+
+ /**
+ * Walks down a FromClause AST node, thereby generating the appropriate SQL.
+ *
+ * @return string The SQL.
+ */
+ public function walkFromClause($fromClause) {}
+
+ /**
+ * Walks down a FunctionNode AST node, thereby generating the appropriate SQL.
+ *
+ * @return string The SQL.
+ */
+ public function walkFunction($function) {}
+
+ /**
+ * Walks down an OrderByClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param OrderByClause
+ * @return string The SQL.
+ */
+ public function walkOrderByClause($orderByClause) {}
+
+ /**
+ * Walks down an OrderByItem AST node, thereby generating the appropriate SQL.
+ *
+ * @param OrderByItem
+ * @return string The SQL.
+ */
+ public function walkOrderByItem($orderByItem) {}
+
+ /**
+ * Walks down a HavingClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param HavingClause
+ * @return string The SQL.
+ */
+ public function walkHavingClause($havingClause) {}
+
+ /**
+ * Walks down a Join AST node and creates the corresponding SQL.
+ *
+ * @param Join $join
+ * @return string The SQL.
+ */
+ public function walkJoin($join) {}
+
+ /**
+ * Walks down a SelectExpression AST node and generates the corresponding SQL.
+ *
+ * @param SelectExpression $selectExpression
+ * @return string The SQL.
+ */
+ public function walkSelectExpression($selectExpression) {}
+
+ /**
+ * Walks down a QuantifiedExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param QuantifiedExpression
+ * @return string The SQL.
+ */
+ public function walkQuantifiedExpression($qExpr) {}
+
+ /**
+ * Walks down a Subselect AST node, thereby generating the appropriate SQL.
+ *
+ * @param Subselect
+ * @return string The SQL.
+ */
+ public function walkSubselect($subselect) {}
+
+ /**
+ * Walks down a SubselectFromClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param SubselectFromClause
+ * @return string The SQL.
+ */
+ public function walkSubselectFromClause($subselectFromClause) {}
+
+ /**
+ * Walks down a SimpleSelectClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param SimpleSelectClause
+ * @return string The SQL.
+ */
+ public function walkSimpleSelectClause($simpleSelectClause) {}
+
+ /**
+ * Walks down a SimpleSelectExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param SimpleSelectExpression
+ * @return string The SQL.
+ */
+ public function walkSimpleSelectExpression($simpleSelectExpression) {}
+
+ /**
+ * Walks down an AggregateExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param AggregateExpression
+ * @return string The SQL.
+ */
+ public function walkAggregateExpression($aggExpression) {}
+
+ /**
+ * Walks down a GroupByClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param GroupByClause
+ * @return string The SQL.
+ */
+ public function walkGroupByClause($groupByClause) {}
+
+ /**
+ * Walks down a GroupByItem AST node, thereby generating the appropriate SQL.
+ *
+ * @param GroupByItem
+ * @return string The SQL.
+ */
+ public function walkGroupByItem($groupByItem) {}
+
+ /**
+ * Walks down an UpdateStatement AST node, thereby generating the appropriate SQL.
+ *
+ * @param UpdateStatement
+ * @return string The SQL.
+ */
+ public function walkUpdateStatement(AST\UpdateStatement $AST) {}
+
+ /**
+ * Walks down a DeleteStatement AST node, thereby generating the appropriate SQL.
+ *
+ * @param DeleteStatement
+ * @return string The SQL.
+ */
+ public function walkDeleteStatement(AST\DeleteStatement $AST) {}
+
+ /**
+ * Walks down a DeleteClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param DeleteClause
+ * @return string The SQL.
+ */
+ public function walkDeleteClause(AST\DeleteClause $deleteClause) {}
+
+ /**
+ * Walks down an UpdateClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param UpdateClause
+ * @return string The SQL.
+ */
+ public function walkUpdateClause($updateClause) {}
+
+ /**
+ * Walks down an UpdateItem AST node, thereby generating the appropriate SQL.
+ *
+ * @param UpdateItem
+ * @return string The SQL.
+ */
+ public function walkUpdateItem($updateItem) {}
+
+ /**
+ * Walks down a WhereClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param WhereClause
+ * @return string The SQL.
+ */
+ public function walkWhereClause($whereClause) {}
+
+ /**
+ * Walks down a ConditionalExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param ConditionalExpression
+ * @return string The SQL.
+ */
+ public function walkConditionalExpression($condExpr) {}
+
+ /**
+ * Walks down a ConditionalTerm AST node, thereby generating the appropriate SQL.
+ *
+ * @param ConditionalTerm
+ * @return string The SQL.
+ */
+ public function walkConditionalTerm($condTerm) {}
+
+ /**
+ * Walks down a ConditionalFactor AST node, thereby generating the appropriate SQL.
+ *
+ * @param ConditionalFactor
+ * @return string The SQL.
+ */
+ public function walkConditionalFactor($factor) {}
+
+ /**
+ * Walks down a ConditionalPrimary AST node, thereby generating the appropriate SQL.
+ *
+ * @param ConditionalPrimary
+ * @return string The SQL.
+ */
+ public function walkConditionalPrimary($primary) {}
+
+ /**
+ * Walks down an ExistsExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param ExistsExpression
+ * @return string The SQL.
+ */
+ public function walkExistsExpression($existsExpr) {}
+
+ /**
+ * Walks down a CollectionMemberExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param CollectionMemberExpression
+ * @return string The SQL.
+ */
+ public function walkCollectionMemberExpression($collMemberExpr) {}
+
+ /**
+ * Walks down an EmptyCollectionComparisonExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param EmptyCollectionComparisonExpression
+ * @return string The SQL.
+ */
+ public function walkEmptyCollectionComparisonExpression($emptyCollCompExpr) {}
+
+ /**
+ * Walks down a NullComparisonExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param NullComparisonExpression
+ * @return string The SQL.
+ */
+ public function walkNullComparisonExpression($nullCompExpr) {}
+
+ /**
+ * Walks down an InExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param InExpression
+ * @return string The SQL.
+ */
+ public function walkInExpression($inExpr) {}
+
+ /**
+ * Walks down an InstanceOfExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param InstanceOfExpression
+ * @return string The SQL.
+ */
+ function walkInstanceOfExpression($instanceOfExpr) {}
+
+ /**
+ * Walks down a literal that represents an AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkLiteral($literal) {}
+
+ /**
+ * Walks down a BetweenExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param BetweenExpression
+ * @return string The SQL.
+ */
+ public function walkBetweenExpression($betweenExpr) {}
+
+ /**
+ * Walks down a LikeExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param LikeExpression
+ * @return string The SQL.
+ */
+ public function walkLikeExpression($likeExpr) {}
+
+ /**
+ * Walks down a StateFieldPathExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param StateFieldPathExpression
+ * @return string The SQL.
+ */
+ public function walkStateFieldPathExpression($stateFieldPathExpression) {}
+
+ /**
+ * Walks down a ComparisonExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param ComparisonExpression
+ * @return string The SQL.
+ */
+ public function walkComparisonExpression($compExpr) {}
+
+ /**
+ * Walks down an InputParameter AST node, thereby generating the appropriate SQL.
+ *
+ * @param InputParameter
+ * @return string The SQL.
+ */
+ public function walkInputParameter($inputParam) {}
+
+ /**
+ * Walks down an ArithmeticExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param ArithmeticExpression
+ * @return string The SQL.
+ */
+ public function walkArithmeticExpression($arithmeticExpr) {}
+
+ /**
+ * Walks down an ArithmeticTerm AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkArithmeticTerm($term) {}
+
+ /**
+ * Walks down a StringPrimary that represents an AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkStringPrimary($stringPrimary) {}
+
+ /**
+ * Walks down an ArithmeticFactor that represents an AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkArithmeticFactor($factor) {}
+
+ /**
+ * Walks down an SimpleArithmeticExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param SimpleArithmeticExpression
+ * @return string The SQL.
+ */
+ public function walkSimpleArithmeticExpression($simpleArithmeticExpr) {}
+
+ /**
+ * Walks down an PathExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkPathExpression($pathExpr) {}
+
+ /**
+ * Walks down an ResultVariable AST node, thereby generating the appropriate SQL.
+ *
+ * @param string $resultVariable
+ * @return string The SQL.
+ */
+ public function walkResultVariable($resultVariable) {}
+
+ /**
+ * Gets an executor that can be used to execute the result of this walker.
+ *
+ * @return AbstractExecutor
+ */
+ public function getExecutor($AST) {}
+}