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package liquibase.database;
import liquibase.CatalogAndSchema;
import liquibase.change.Change;
import liquibase.changelog.ChangeSet;
import liquibase.changelog.DatabaseChangeLog;
import liquibase.changelog.RanChangeSet;
import liquibase.exception.*;
import liquibase.servicelocator.PrioritizedService;
import liquibase.sql.visitor.SqlVisitor;
import liquibase.statement.DatabaseFunction;
import liquibase.statement.SqlStatement;
import liquibase.structure.DatabaseObject;
import java.io.IOException;
import java.io.Writer;
import java.math.BigInteger;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Locale;
/**
* Interface that every DBMS supported by this software must implement. Most methods belong into ont of these
* categories:
*
*
Information about the capabilities of the DBMS (e.g. can it work with catalogs? with schemas?)
*
changing and manipulating types defined in the SQL standard into native types and vice-versa
*
creating strings for use in SQL statements, e.g. literals for dates, time, numerals, etc.
*
*/
public interface Database extends PrioritizedService {
String databaseChangeLogTableName = "DatabaseChangeLog".toUpperCase(Locale.US);
String databaseChangeLogLockTableName = "DatabaseChangeLogLock".toUpperCase(Locale.US);
/**
* Is this AbstractDatabase subclass the correct one to use for the given connection.
*/
boolean isCorrectDatabaseImplementation(DatabaseConnection conn) throws DatabaseException;
/**
* If this database understands the given url, return the default driver class name. Otherwise return null.
*/
String getDefaultDriver(String url);
DatabaseConnection getConnection();
void setConnection(DatabaseConnection conn);
boolean requiresUsername();
boolean requiresPassword();
/**
* Auto-commit mode to run in
*/
boolean getAutoCommitMode();
/**
* Determines if the database supports DDL within a transaction or not.
*
* @return True if the database supports DDL within a transaction, otherwise false.
*/
boolean supportsDDLInTransaction();
/**
* Returns the name of the database product according to the underlying database.
*/
String getDatabaseProductName();
String getDatabaseProductVersion() throws DatabaseException;
int getDatabaseMajorVersion() throws DatabaseException;
int getDatabaseMinorVersion() throws DatabaseException;
/**
* Returns an all-lower-case short name of the product. Used for end-user selecting of database type
* such as the DBMS precondition.
*/
String getShortName();
String getDefaultCatalogName();
void setDefaultCatalogName(String catalogName) throws DatabaseException;
String getDefaultSchemaName();
/**
* Returns the default precision for a given native data type, e.g. "datetime2" for Microsoft SQL Server.
* @param nativeDataType the name of the native data type (case-insensitive).
* @return The default precision of the native data type, or null if the type is unknown to this database.
*/
Integer getDefaultScaleForNativeDataType(String nativeDataType);
void setDefaultSchemaName(String schemaName) throws DatabaseException;
Integer getDefaultPort();
Integer getFetchSize();
String getLiquibaseCatalogName();
void setLiquibaseCatalogName(String catalogName);
String getLiquibaseSchemaName();
void setLiquibaseSchemaName(String schemaName);
/**
* Returns whether this database support initially deferrable columns.
*/
boolean supportsInitiallyDeferrableColumns();
boolean supportsSequences();
boolean supportsDropTableCascadeConstraints();
boolean supportsAutoIncrement();
String getDateLiteral(String isoDate);
/**
* Returns database-specific function for generating the current date/time.
*/
String getCurrentDateTimeFunction();
void setCurrentDateTimeFunction(String function);
String getLineComment();
/**
* Returns database-specific auto-increment DDL clause.
*/
String getAutoIncrementClause(BigInteger startWith, BigInteger incrementBy);
String getDatabaseChangeLogTableName();
/**
* Set the table name of the change log to the given table name
*
* @param tableName
*/
void setDatabaseChangeLogTableName(String tableName);
String getDatabaseChangeLogLockTableName();
/**
* Set the table name of the change log lock to the given table name
*
* @param tableName
*/
void setDatabaseChangeLogLockTableName(String tableName);
String getLiquibaseTablespaceName();
void setLiquibaseTablespaceName(String tablespaceName);
/**
* Returns SQL to concat the passed values.
*/
String getConcatSql(String... values);
void setCanCacheLiquibaseTableInfo(boolean canCacheLiquibaseTableInfo);
/**
* Drops all objects in a specified schema.
* @param schema schema (catalog+)schema to drop
* @throws LiquibaseException if any problem occurs
*/
void dropDatabaseObjects(CatalogAndSchema schema) throws LiquibaseException;
/**
* Tags the database changelog with the given string.
*/
void tag(String tagString) throws DatabaseException;
boolean doesTagExist(String tag) throws DatabaseException;
boolean isSystemObject(DatabaseObject example);
boolean isLiquibaseObject(DatabaseObject object);
String getViewDefinition(CatalogAndSchema schema, String name) throws DatabaseException;
String getDateLiteral(java.sql.Date date);
String getTimeLiteral(java.sql.Time time);
String getDateTimeLiteral(java.sql.Timestamp timeStamp);
String getDateLiteral(Date defaultDateValue);
String escapeObjectName(String catalogName, String schemaName, String objectName, Class objectType);
String escapeTableName(String catalogName, String schemaName, String tableName);
String escapeIndexName(String catalogName, String schemaName, String indexName);
String escapeObjectName(String objectName, Class objectType);
/**
* Determines the maximum precision (number of fractional digits) for TIMESTAMP columns for the given database.
* Might not always be able to give an exact answer since, for some DBMS, it depends on the actual software version
* if fractional digits are supported. A warning should be logged in this case.
*
* @return the number of allowed fractional digits for TIMESTAMP columns. May return 0.
*/
int getMaxFractionalDigitsForTimestamp();
/**
* When a TIMESTAMP column without the parameter "number of fractional digits" is created, what is the default
* value?
*
* @return The default number of fractional digits for TIMESTAMP columns
*/
int getDefaultFractionalDigitsForTimestamp();
/**
* Escapes a single column name in a database-dependent manner so reserved words can be used as a column
* name (i.e. "return").
*
* @param schemaName
* @param tableName
* @param columnName column name
* @return escaped column name
*/
String escapeColumnName(String catalogName, String schemaName, String tableName, String columnName);
/**
* Similar to {@link #escapeColumnName(String, String, String, String)} but allows control over whether function-like names should be left unquoted.
*
* @deprecated Know if you should quote the name or not, and use {@link #escapeColumnName(String, String, String, String)} which will quote things that look like functions, or leave it along as you see fit. Don't rely on this function guessing.
*/
String escapeColumnName(String catalogName, String schemaName, String tableName, String columnName, boolean quoteNamesThatMayBeFunctions);
/**
* Escapes a list of column names in a database-dependent manner so reserved words can be used as a column
* name (i.e. "return").
*
* @param columnNames list of column names
* @return escaped column name list
*/
String escapeColumnNameList(String columnNames);
// Set findUniqueConstraints(String schema) throws DatabaseException;
boolean supportsTablespaces();
boolean supportsCatalogs();
CatalogAndSchema.CatalogAndSchemaCase getSchemaAndCatalogCase();
boolean supportsSchemas();
boolean supportsCatalogInObjectName(Class type);
String generatePrimaryKeyName(String tableName);
String escapeSequenceName(String catalogName, String schemaName, String sequenceName);
String escapeViewName(String catalogName, String schemaName, String viewName);
/**
* Returns the run status for the given ChangeSet
*/
ChangeSet.RunStatus getRunStatus(ChangeSet changeSet) throws DatabaseException, DatabaseHistoryException;
RanChangeSet getRanChangeSet(ChangeSet changeSet) throws DatabaseException, DatabaseHistoryException;
/**
* After the change set has been ran against the database this method will update the change log table
* with the information.
*/
void markChangeSetExecStatus(ChangeSet changeSet, ChangeSet.ExecType execType) throws DatabaseException;
/**
* Returns the ChangeSets that have been run against the current database.
*/
List getRanChangeSetList() throws DatabaseException;
Date getRanDate(ChangeSet changeSet) throws DatabaseException, DatabaseHistoryException;
void removeRanStatus(ChangeSet changeSet) throws DatabaseException;
void commit() throws DatabaseException;
void rollback() throws DatabaseException;
String escapeStringForDatabase(String string);
void close() throws DatabaseException;
boolean supportsRestrictForeignKeys();
String escapeConstraintName(String constraintName);
boolean isAutoCommit() throws DatabaseException;
void setAutoCommit(boolean b) throws DatabaseException;
boolean isSafeToRunUpdate() throws DatabaseException;
void executeStatements(Change change, DatabaseChangeLog changeLog, List sqlVisitors) throws LiquibaseException;
/*
* Executes the statements passed as argument to a target {@link Database}
*
* @param statements an array containing the SQL statements to be issued
* @param database the target {@link Database}
* @throws DatabaseException if there were problems issuing the statements
*/
void execute(SqlStatement[] statements, List sqlVisitors) throws LiquibaseException;
void saveStatements(Change change, List sqlVisitors, Writer writer) throws IOException, LiquibaseException;
void executeRollbackStatements(Change change, List sqlVisitors) throws LiquibaseException;
void executeRollbackStatements(SqlStatement[] statements, List sqlVisitors) throws LiquibaseException;
void saveRollbackStatement(Change change, List sqlVisitors, Writer writer) throws IOException, LiquibaseException;
Date parseDate(String dateAsString) throws DateParseException;
/**
* Returns list of database native date functions
*/
List getDateFunctions();
void resetInternalState();
boolean supportsForeignKeyDisable();
boolean disableForeignKeyChecks() throws DatabaseException;
void enableForeignKeyChecks() throws DatabaseException;
boolean isCaseSensitive();
boolean isReservedWord(String string);
/**
* Returns a new CatalogAndSchema adjusted for this database. Examples of adjustments include:
* fixes for case issues,
* replacing null schema or catalog names with the default values
* removing set schema or catalog names if they are not supported
* @deprecated use {@link liquibase.CatalogAndSchema#standardize(Database)}
*/
CatalogAndSchema correctSchema(CatalogAndSchema schema);
/**
* Fix the object name to the format the database expects, handling changes in case, etc.
*/
String correctObjectName(String name, Class objectType);
boolean isFunction(String string);
int getDataTypeMaxParameters(String dataTypeName);
CatalogAndSchema getDefaultSchema();
/**
* Types like int4 in postgres cannot have a modifier. e.g. int4(10)
* Checks whether the type is allowed to have a modifier
*
* @param typeName type name
* @return Whether data type can have a modifier
*/
boolean dataTypeIsNotModifiable(String typeName);
/**
* Some function names are placeholders that need to be replaced with the specific database value.
* e.g. nextSequenceValue(sequenceName) should be replaced with NEXT_VAL('sequenceName') for Postgresql
* @param databaseFunction database function to check.
* @return the string value to use for an update or generate
*/
String generateDatabaseFunctionValue(DatabaseFunction databaseFunction);
ObjectQuotingStrategy getObjectQuotingStrategy();
void setObjectQuotingStrategy(ObjectQuotingStrategy quotingStrategy);
boolean createsIndexesForForeignKeys();
/**
* Should the schema be included in identifiers even if it is the default schema?
*
* @return true (if the schema should be included in every case) or false (omit if default schema)
*/
boolean getOutputDefaultSchema();
/**
* Whether the default schema should be included in generated SQL
*/
void setOutputDefaultSchema(boolean outputDefaultSchema);
/**
* If the database supports schemas, test if a given combination of catalog and schema name equals to the default
* catalog and schema of the current logged in user.
* @param catalog catalog name to be tested
* @param schema schema name to be tested
* @return if the database supports catalogs: true if it is the default schema, false if not. If it does not
* support schemas, the behaviour of this method is undefined (please call supportsSchemas first!)
*/
boolean isDefaultSchema(String catalog, String schema);
/**
* If the database supports catalogs, test if a given catalog name equals to the default catalog of the current
* logged in user.
* @param catalog catalog name to be tested
* @return if the database supports catalogs: true if it is the default catalog, false if not. If it does not
* support catalogs, the behaviour of this method is undefined (please call supportsCatalog first!)
*/
boolean isDefaultCatalog(String catalog);
boolean getOutputDefaultCatalog();
void setOutputDefaultCatalog(boolean outputDefaultCatalog);
boolean supportsPrimaryKeyNames();
/**
* Does this database treat NOT NULL as an own kind of CONSTRAINT (in addition of simply being a column property)?
* This will affect the CONSTRAINT clause SQL generators.
* @return true if the database supports naming NOT NULL constraints, false if not.
*/
boolean supportsNotNullConstraintNames();
/**
* Does the database support batched DML (INSERT/UPDATE/DELETE/MERGE/...) statements sent in a single call to
* the database?
* @return true if the database has this capability for all DML statements, false in all other cases
*/
boolean supportsBatchUpdates() throws DatabaseException;
/**
* Does the database require explicit NULL for nullable columns?
*
* @return true if the database behaves incorrectly if NULL is not explicitly specified,
* false if it behaves like any good RDBMS should.
*/
boolean requiresExplicitNullForColumns();
String getSystemSchema();
void addReservedWords(Collection words);
String escapeDataTypeName(String dataTypeName);
String unescapeDataTypeName(String dataTypeName);
String unescapeDataTypeString(String dataTypeString);
ValidationErrors validate();
}
