--- /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\DBAL\Schema;
+
+/**
+ * Compare to Schemas and return an instance of SchemaDiff
+ *
+ * @copyright Copyright (C) 2005-2009 eZ Systems AS. All rights reserved.
+ * @license http://ez.no/licenses/new_bsd New BSD License
+ *
+ * @link www.doctrine-project.org
+ * @since 2.0
+ * @version $Revision$
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ */
+class Comparator
+{
+ /**
+ * @param Schema $fromSchema
+ * @param Schema $toSchema
+ * @return SchemaDiff
+ */
+ static public function compareSchemas( Schema $fromSchema, Schema $toSchema )
+ {
+ $c = new self();
+ return $c->compare($fromSchema, $toSchema);
+ }
+
+ /**
+ * Returns a SchemaDiff object containing the differences between the schemas $fromSchema and $toSchema.
+ *
+ * The returned diferences are returned in such a way that they contain the
+ * operations to change the schema stored in $fromSchema to the schema that is
+ * stored in $toSchema.
+ *
+ * @param Schema $fromSchema
+ * @param Schema $toSchema
+ *
+ * @return SchemaDiff
+ */
+ public function compare(Schema $fromSchema, Schema $toSchema)
+ {
+ $diff = new SchemaDiff();
+
+ $foreignKeysToTable = array();
+
+ foreach ( $toSchema->getTables() as $table ) {
+ $tableName = $table->getShortestName($toSchema->getName());
+ if ( ! $fromSchema->hasTable($tableName)) {
+ $diff->newTables[$tableName] = $toSchema->getTable($tableName);
+ } else {
+ $tableDifferences = $this->diffTable($fromSchema->getTable($tableName), $toSchema->getTable($tableName));
+ if ($tableDifferences !== false) {
+ $diff->changedTables[$tableName] = $tableDifferences;
+ }
+ }
+ }
+
+ /* Check if there are tables removed */
+ foreach ($fromSchema->getTables() as $table) {
+ $tableName = $table->getShortestName($fromSchema->getName());
+
+ $table = $fromSchema->getTable($tableName);
+ if ( ! $toSchema->hasTable($tableName) ) {
+ $diff->removedTables[$tableName] = $table;
+ }
+
+ // also remember all foreign keys that point to a specific table
+ foreach ($table->getForeignKeys() as $foreignKey) {
+ $foreignTable = strtolower($foreignKey->getForeignTableName());
+ if (!isset($foreignKeysToTable[$foreignTable])) {
+ $foreignKeysToTable[$foreignTable] = array();
+ }
+ $foreignKeysToTable[$foreignTable][] = $foreignKey;
+ }
+ }
+
+ foreach ($diff->removedTables as $tableName => $table) {
+ if (isset($foreignKeysToTable[$tableName])) {
+ $diff->orphanedForeignKeys = array_merge($diff->orphanedForeignKeys, $foreignKeysToTable[$tableName]);
+ }
+ }
+
+ foreach ($toSchema->getSequences() as $sequence) {
+ $sequenceName = $sequence->getShortestName($toSchema->getName());
+ if ( ! $fromSchema->hasSequence($sequenceName)) {
+ $diff->newSequences[] = $sequence;
+ } else {
+ if ($this->diffSequence($sequence, $fromSchema->getSequence($sequenceName))) {
+ $diff->changedSequences[] = $toSchema->getSequence($sequenceName);
+ }
+ }
+ }
+
+ foreach ($fromSchema->getSequences() as $sequence) {
+ if ($this->isAutoIncrementSequenceInSchema($toSchema, $sequence)) {
+ continue;
+ }
+
+ $sequenceName = $sequence->getShortestName($fromSchema->getName());
+
+ if ( ! $toSchema->hasSequence($sequenceName)) {
+ $diff->removedSequences[] = $sequence;
+ }
+ }
+
+ return $diff;
+ }
+
+ private function isAutoIncrementSequenceInSchema($schema, $sequence)
+ {
+ foreach ($schema->getTables() as $table) {
+ if ($sequence->isAutoIncrementsFor($table)) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ *
+ * @param Sequence $sequence1
+ * @param Sequence $sequence2
+ */
+ public function diffSequence(Sequence $sequence1, Sequence $sequence2)
+ {
+ if($sequence1->getAllocationSize() != $sequence2->getAllocationSize()) {
+ return true;
+ }
+
+ if($sequence1->getInitialValue() != $sequence2->getInitialValue()) {
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Returns the difference between the tables $table1 and $table2.
+ *
+ * If there are no differences this method returns the boolean false.
+ *
+ * @param Table $table1
+ * @param Table $table2
+ *
+ * @return bool|TableDiff
+ */
+ public function diffTable(Table $table1, Table $table2)
+ {
+ $changes = 0;
+ $tableDifferences = new TableDiff($table1->getName());
+
+ $table1Columns = $table1->getColumns();
+ $table2Columns = $table2->getColumns();
+
+ /* See if all the fields in table 1 exist in table 2 */
+ foreach ( $table2Columns as $columnName => $column ) {
+ if ( !$table1->hasColumn($columnName) ) {
+ $tableDifferences->addedColumns[$columnName] = $column;
+ $changes++;
+ }
+ }
+ /* See if there are any removed fields in table 2 */
+ foreach ( $table1Columns as $columnName => $column ) {
+ if ( !$table2->hasColumn($columnName) ) {
+ $tableDifferences->removedColumns[$columnName] = $column;
+ $changes++;
+ }
+ }
+
+ foreach ( $table1Columns as $columnName => $column ) {
+ if ( $table2->hasColumn($columnName) ) {
+ $changedProperties = $this->diffColumn( $column, $table2->getColumn($columnName) );
+ if (count($changedProperties) ) {
+ $columnDiff = new ColumnDiff($column->getName(), $table2->getColumn($columnName), $changedProperties);
+ $tableDifferences->changedColumns[$column->getName()] = $columnDiff;
+ $changes++;
+ }
+ }
+ }
+
+ $this->detectColumnRenamings($tableDifferences);
+
+ $table1Indexes = $table1->getIndexes();
+ $table2Indexes = $table2->getIndexes();
+
+ foreach ($table2Indexes as $index2Name => $index2Definition) {
+ foreach ($table1Indexes as $index1Name => $index1Definition) {
+ if ($this->diffIndex($index1Definition, $index2Definition) === false) {
+ unset($table1Indexes[$index1Name]);
+ unset($table2Indexes[$index2Name]);
+ } else {
+ if ($index1Name == $index2Name) {
+ $tableDifferences->changedIndexes[$index2Name] = $table2Indexes[$index2Name];
+ unset($table1Indexes[$index1Name]);
+ unset($table2Indexes[$index2Name]);
+ $changes++;
+ }
+ }
+ }
+ }
+
+ foreach ($table1Indexes as $index1Name => $index1Definition) {
+ $tableDifferences->removedIndexes[$index1Name] = $index1Definition;
+ $changes++;
+ }
+
+ foreach ($table2Indexes as $index2Name => $index2Definition) {
+ $tableDifferences->addedIndexes[$index2Name] = $index2Definition;
+ $changes++;
+ }
+
+ $fromFkeys = $table1->getForeignKeys();
+ $toFkeys = $table2->getForeignKeys();
+
+ foreach ($fromFkeys as $key1 => $constraint1) {
+ foreach ($toFkeys as $key2 => $constraint2) {
+ if($this->diffForeignKey($constraint1, $constraint2) === false) {
+ unset($fromFkeys[$key1]);
+ unset($toFkeys[$key2]);
+ } else {
+ if (strtolower($constraint1->getName()) == strtolower($constraint2->getName())) {
+ $tableDifferences->changedForeignKeys[] = $constraint2;
+ $changes++;
+ unset($fromFkeys[$key1]);
+ unset($toFkeys[$key2]);
+ }
+ }
+ }
+ }
+
+ foreach ($fromFkeys as $key1 => $constraint1) {
+ $tableDifferences->removedForeignKeys[] = $constraint1;
+ $changes++;
+ }
+
+ foreach ($toFkeys as $key2 => $constraint2) {
+ $tableDifferences->addedForeignKeys[] = $constraint2;
+ $changes++;
+ }
+
+ return $changes ? $tableDifferences : false;
+ }
+
+ /**
+ * Try to find columns that only changed their name, rename operations maybe cheaper than add/drop
+ * however ambiguouties between different possibilites should not lead to renaming at all.
+ *
+ * @param TableDiff $tableDifferences
+ */
+ private function detectColumnRenamings(TableDiff $tableDifferences)
+ {
+ $renameCandidates = array();
+ foreach ($tableDifferences->addedColumns as $addedColumnName => $addedColumn) {
+ foreach ($tableDifferences->removedColumns as $removedColumnName => $removedColumn) {
+ if (count($this->diffColumn($addedColumn, $removedColumn)) == 0) {
+ $renameCandidates[$addedColumn->getName()][] = array($removedColumn, $addedColumn, $addedColumnName);
+ }
+ }
+ }
+
+ foreach ($renameCandidates as $candidateColumns) {
+ if (count($candidateColumns) == 1) {
+ list($removedColumn, $addedColumn) = $candidateColumns[0];
+ $removedColumnName = strtolower($removedColumn->getName());
+ $addedColumnName = strtolower($addedColumn->getName());
+
+ $tableDifferences->renamedColumns[$removedColumnName] = $addedColumn;
+ unset($tableDifferences->addedColumns[$addedColumnName]);
+ unset($tableDifferences->removedColumns[$removedColumnName]);
+ }
+ }
+ }
+
+ /**
+ * @param ForeignKeyConstraint $key1
+ * @param ForeignKeyConstraint $key2
+ * @return bool
+ */
+ public function diffForeignKey(ForeignKeyConstraint $key1, ForeignKeyConstraint $key2)
+ {
+ if (array_map('strtolower', $key1->getLocalColumns()) != array_map('strtolower', $key2->getLocalColumns())) {
+ return true;
+ }
+
+ if (array_map('strtolower', $key1->getForeignColumns()) != array_map('strtolower', $key2->getForeignColumns())) {
+ return true;
+ }
+
+ if ($key1->onUpdate() != $key2->onUpdate()) {
+ return true;
+ }
+
+ if ($key1->onDelete() != $key2->onDelete()) {
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Returns the difference between the fields $field1 and $field2.
+ *
+ * If there are differences this method returns $field2, otherwise the
+ * boolean false.
+ *
+ * @param Column $column1
+ * @param Column $column2
+ *
+ * @return array
+ */
+ public function diffColumn(Column $column1, Column $column2)
+ {
+ $changedProperties = array();
+ if ( $column1->getType() != $column2->getType() ) {
+ $changedProperties[] = 'type';
+ }
+
+ if ($column1->getNotnull() != $column2->getNotnull()) {
+ $changedProperties[] = 'notnull';
+ }
+
+ if ($column1->getDefault() != $column2->getDefault()) {
+ $changedProperties[] = 'default';
+ }
+
+ if ($column1->getUnsigned() != $column2->getUnsigned()) {
+ $changedProperties[] = 'unsigned';
+ }
+
+ if ($column1->getType() instanceof \Doctrine\DBAL\Types\StringType) {
+ // check if value of length is set at all, default value assumed otherwise.
+ $length1 = $column1->getLength() ?: 255;
+ $length2 = $column2->getLength() ?: 255;
+ if ($length1 != $length2) {
+ $changedProperties[] = 'length';
+ }
+
+ if ($column1->getFixed() != $column2->getFixed()) {
+ $changedProperties[] = 'fixed';
+ }
+ }
+
+ if ($column1->getType() instanceof \Doctrine\DBAL\Types\DecimalType) {
+ if (($column1->getPrecision()?:10) != ($column2->getPrecision()?:10)) {
+ $changedProperties[] = 'precision';
+ }
+ if ($column1->getScale() != $column2->getScale()) {
+ $changedProperties[] = 'scale';
+ }
+ }
+
+ if ($column1->getAutoincrement() != $column2->getAutoincrement()) {
+ $changedProperties[] = 'autoincrement';
+ }
+
+ // only allow to delete comment if its set to '' not to null.
+ if ($column1->getComment() !== null && $column1->getComment() != $column2->getComment()) {
+ $changedProperties[] = 'comment';
+ }
+
+ $options1 = $column1->getCustomSchemaOptions();
+ $options2 = $column2->getCustomSchemaOptions();
+
+ $commonKeys = array_keys(array_intersect_key($options1, $options2));
+
+ foreach ($commonKeys as $key) {
+ if ($options1[$key] !== $options2[$key]) {
+ $changedProperties[] = $key;
+ }
+ }
+
+ $diffKeys = array_keys(array_diff_key($options1, $options2) + array_diff_key($options2, $options1));
+
+ $changedProperties = array_merge($changedProperties, $diffKeys);
+
+ return $changedProperties;
+ }
+
+ /**
+ * Finds the difference between the indexes $index1 and $index2.
+ *
+ * Compares $index1 with $index2 and returns $index2 if there are any
+ * differences or false in case there are no differences.
+ *
+ * @param Index $index1
+ * @param Index $index2
+ * @return bool
+ */
+ public function diffIndex(Index $index1, Index $index2)
+ {
+ if ($index1->isFullfilledBy($index2) && $index2->isFullfilledBy($index1)) {
+ return false;
+ }
+ return true;
+ }
+}
projects / zf2.biz / application_blanche.git / blobdiff