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<?php
namespace Inlm\SchemaGenerator\Utils;
use CzProject\SqlSchema;
use Inlm\SchemaGenerator\Database;
use Inlm\SchemaGenerator\DataType;
use Inlm\SchemaGenerator\DuplicatedException;
use Inlm\SchemaGenerator\InvalidArgumentException;
use Inlm\SchemaGenerator\MissingException;
use Inlm\SchemaGenerator\SchemaGenerator;
class Generator
{
private $options;
private $databaseType;
private $schema;
private $tables = array();
private $columns = array();
private $indexes = array();
private $relationships = array();
private $hasManyTables = array();
public function __construct(array $options = array(), $databaseType = NULL)
{
$this->options = $options;
$this->databaseType = $databaseType;
$this->schema = new SqlSchema\Schema;
}
public function finalize()
{
$this->createHasManyTables();
$this->createRelationships();
foreach ($this->tables as $tableName => $table) {
$primaryColumn = $table->getPrimaryColumn();
if ($primaryColumn !== NULL && !$this->hasPrimaryIndex($tableName)) {
$this->addPrimaryIndex($tableName, $primaryColumn);
}
}
foreach ($this->columns as $tableName => $columns) {
if (!isset($this->tables[$tableName])) {
continue;
}
foreach ($columns as $column) {
$definition = $column->getDefinition();
if (!$definition->isNullable() && $column->getNumberOfCreation() < $this->tables[$tableName]->getNumberOfCreation()) {
$definition->setNullable();
}
}
}
return $this->schema;
}
public function addRelationship($sourceTable, $sourceColumn, $targetTable)
{
if (isset($this->relationships[$sourceTable][$sourceColumn])) {
if ($this->relationships[$sourceTable][$sourceColumn] !== $targetTable) {
throw new DuplicatedException("Already exists relationship for column '$sourceTable'.'$sourceColumn'.");
}
}
$this->relationships[$sourceTable][$sourceColumn] = $targetTable;
return $this;
}
public function addHasManyTable($tableName, $sourceTable, $sourceColumn, $targetTable, $targetColumn)
{
$hasManyTable = new GeneratorHasManyTable($sourceTable, $sourceColumn, $tableName, $targetTable, $targetColumn);
if (isset($this->hasManyTables[$tableName]) && $this->hasManyTables[$tableName]->hasDifferences($hasManyTable)) {
throw new DuplicatedException("HasManyTable already exists for different relation.");
}
$this->hasManyTables[$tableName] = $hasManyTable;
$this->addRelationship($tableName, $sourceColumn, $sourceTable);
$this->addRelationship($tableName, $targetColumn, $targetTable);
return $this;
}
protected function createHasManyTables()
{
foreach ($this->hasManyTables as $hasManyTable => $data) {
if (!$this->hasTable($hasManyTable)) {
$this->createTable($hasManyTable);
$this->addColumn($hasManyTable, $data->getSourceColumn(), NULL);
$this->addColumn($hasManyTable, $data->getTargetColumn(), NULL);
$this->addPrimaryIndex($hasManyTable, array($data->getSourceColumn(), $data->getTargetColumn()));
$this->addIndex($hasManyTable, $data->getTargetColumn());
}
}
}
protected function createRelationships()
{
foreach ($this->relationships as $sourceTable => $sourceColumns) {
foreach ($sourceColumns as $sourceColumn => $targetTable) {
if (!$this->hasTable($sourceTable)) {
throw new MissingException("Missing source table '$sourceTable' for relationship '$sourceTable'.'$sourceColumn' => '$targetTable'.");
}
if (!$this->hasTable($targetTable)) {
throw new MissingException("Missing target table '$targetTable' for relationship '$sourceTable'.'$sourceColumn' => '$targetTable'.");
}
if ($this->tables[$targetTable]->getPrimaryColumn() === NULL) {
throw new MissingException("Table '$targetTable' has no primary column.");
}
$targetColumn = $this->tables[$targetTable]->getPrimaryColumn();
$_sourceTable = $this->tables[$sourceTable]->getDefinition();
$_sourceColumn = $_sourceTable->getColumn($sourceColumn);
$_targetTable = $this->tables[$targetTable]->getDefinition();
$_targetColumn = $_targetTable->getColumn($targetColumn);
if ($_sourceColumn === NULL) {
throw new MissingException("Missing column '$sourceTable'.'$sourceColumn'.");
}
if ($_targetColumn === NULL) {
throw new MissingException("Missing column '$targetTable'.'$targetColumn'.");
}
$_sourceType = $_sourceColumn->getType();
$_targetType = $_targetColumn->getType();
if ($_sourceType !== NULL) {
throw new DuplicatedException("Column '$sourceTable'.'$sourceColumn' has already data type. Column is required in relationship '$sourceTable'.'$sourceColumn' => '$targetTable'.");
}
if ($_targetType === NULL) {
throw new MissingException("Column '$targetTable'.'$targetColumn' has no data type. Column is required in relationship '$sourceTable'.'$sourceColumn' => '$targetTable'.");
}
$_sourceColumn->setType($_targetColumn->getType());
$_sourceColumn->setParameters($_targetColumn->getParameters());
$_sourceColumn->setOptions($_targetColumn->getOptions());
$foreignKeyName = $this->formatForeignKey($sourceTable, $sourceColumn);
$_sourceTable->addForeignKey(
$foreignKeyName,
$sourceColumn,
$targetTable,
$targetColumn
);
if ($this->databaseType === Database::MYSQL) {
if (!$this->hasIndexWithFirstColumn($sourceTable, $sourceColumn)) {
$this->addTableIndex($sourceTable, SqlSchema\Index::TYPE_INDEX, $sourceColumn, $foreignKeyName);
}
}
}
}
}
public function createTable($tableName, $primaryColumn = NULL)
{
if (!isset($this->tables[$tableName])) {
$table = $this->schema->addTable($tableName);
foreach ($this->options as $option => $optionValue) {
$table->setOption($option, $optionValue);
}
$this->tables[$tableName] = new GeneratorTable($table, $primaryColumn);
} else {
if ($this->tables[$tableName]->getPrimaryColumn() !== $primaryColumn) {
throw new \RuntimeException("Table '$tableName' already exists with another primary column '{$this->tables[$tableName]->getPrimaryColumn()}'.");
}
}
$this->tables[$tableName]->markAsCreated();
return $this;
}
protected function getTableDefinition($tableName)
{
if (!$this->hasTable($tableName)) {
throw new MissingException("Missing table '$tableName'.");
}
return $this->tables[$tableName]->getDefinition();
}
protected function hasTable($tableName)
{
return isset($this->tables[$tableName]);
}
public function setTableComment($tableName, $comment)
{
$comment = trim($comment);
$this->getTableDefinition($tableName)->setComment($comment !== '' ? $comment : NULL);
}
public function setTableOption($tableName, $option, $value)
{
$this->getTableDefinition($tableName)->setOption(strtoupper($option), $value !== '' ? $value : NULL);
}
public function addColumn($tableName, $columnName, DataType $columnType = NULL)
{
if (isset($this->columns[$tableName][$columnName])) {
$column = $this->columns[$tableName][$columnName]->getDefinition();
if ($columnType) {
$oldType = $column->getType();
$oldParameters = $column->getParameters();
$oldOptions = $column->getOptions();
if ($oldType === NULL && empty($oldParameters) && empty($oldOptions)) {
$column->setType($columnType->getType());
$column->setParameters($columnType->getParameters());
$column->setOptions($columnType->getOptions());
} elseif (!$columnType->isCompatible($column->getType(), $column->getParameters(), $column->getOptions())) {
throw new InvalidArgumentException("Type is not compatible with column $tableName.$columnName");
}
}
$this->columns[$tableName][$columnName]->markAsCreated();
return $column;
}
$table = $this->getTableDefinition($tableName);
$column = $table->addColumn($columnName, NULL, array(), array());
if ($columnType) {
$column->setType($columnType->getType());
$column->setParameters($columnType->getParameters());
$column->setOptions($columnType->getOptions());
}
$this->columns[$tableName][$columnName] = new GeneratorColumn($column);
$this->columns[$tableName][$columnName]->markAsCreated();
return $this;
}
public function setColumnNullable($tableName, $columnName, $isNullable = TRUE)
{
$this->getColumnDefinition($tableName, $columnName)->setNullable($isNullable);
return $this;
}
public function setColumnComment($tableName, $columnName, $comment)
{
$this->getColumnDefinition($tableName, $columnName)->setComment($comment);
return $this;
}
public function setColumnAutoIncrement($tableName, $columnName, $isAutoIncrement = TRUE)
{
$this->getColumnDefinition($tableName, $columnName)->setAutoIncrement($isAutoIncrement);
return $this;
}
protected function getColumnDefinition($tableName, $columnName)
{
if (!isset($this->columns[$tableName][$columnName])) {
throw new MissingException("Missing column '$tableName.$columnName'.");
}
return $this->columns[$tableName][$columnName]->getDefinition();
}
public function addIndex($tableName, $columns)
{
$this->addTableIndex($tableName, SqlSchema\Index::TYPE_INDEX, $columns);
return $this;
}
public function addUniqueIndex($tableName, $columns)
{
$this->addTableIndex($tableName, SqlSchema\Index::TYPE_UNIQUE, $columns);
return $this;
}
public function addPrimaryIndex($tableName, $columns)
{
$this->addTableIndex($tableName, SqlSchema\Index::TYPE_PRIMARY, $columns);
return $this;
}
protected function hasPrimaryIndex($tableName)
{
return isset($this->indexes[$tableName][NULL]);
}
protected function hasIndexWithFirstColumn($tableName, $columnName)
{
if (!isset($this->indexes[$tableName])) {
return FALSE;
}
foreach ($this->indexes[$tableName] as $indexName => $generatorIndex) {
$definition = $generatorIndex->getDefinition();
foreach ($definition->getColumns() as $indexColumn) {
if ($indexColumn->getName() === $columnName) {
return TRUE;
}
break;
}
}
return FALSE;
}
protected function addTableIndex($tableName, $type, $columns, $indexName = NULL)
{
if ($indexName === NULL) {
$indexName = $type !== SqlSchema\Index::TYPE_PRIMARY ? $this->formatIndexName($columns) : NULL;
}
if (isset($this->indexes[$tableName][$indexName])) {
$this->indexes[$tableName][$indexName]->checkCompatibility($type, $columns);
return;
}
$table = $this->getTableDefinition($tableName);
$this->indexes[$tableName][$indexName] = new GeneratorIndex($tableName, $table->addIndex($indexName, $columns, $type));
}
protected function formatIndexName($columns)
{
if (!is_array($columns)) {
$columns = array($columns);
}
return implode('_', $columns);
}
protected function formatForeignKey($table, $columns)
{
if (!is_array($columns)) {
$columns = array($columns);
}
return $table . '_fk_' . implode('_', $columns);
}
}