org.qore.lang.AbstractSQLStatement Class Reference

Java wrapper for the Qore::SQL::AbstractSQLStatement class in Qore. More...

Inheritance diagram for org.qore.lang.AbstractSQLStatement:

Public Member Methods
	AbstractSQLStatement (QoreObject ds)
	creates the object
void	prepare (String sql, Object... args) throws Throwable
	Saves an SQL statement that will be prepared and executed later, along with optional arguments. More...
void	prepareRaw (String sql) throws Throwable
	Saves an SQL statement that will be prepared and executed later. More...
void	bind (Object... args) throws Throwable
	Binds placeholder buffer specifications and values to buffers defined in prepare() More...
void	bindArgs (Object[] vargs) throws Throwable
	Binds placeholder buffer specifications and values given as a list in the single argument to the method to buffers defined in prepare() More...
void	bindPlaceholders (Object... args) throws Throwable
	Binds placeholder buffer specifications to buffers defined in prepare() More...
void	bindPlaceholdersArgs (Object[] vargs) throws Throwable
	Binds placeholder buffer specifications given as a list in the single argument to the method to buffers defined in prepare() More...
void	bindValues (Object... args) throws Throwable
	Binds values to value buffer specifications to buffers defined in prepare() More...
void	bindValuesArgs (Object[] vargs) throws Throwable
	Binds values to value buffer specifications given as a list in the single argument to the method to value buffers defined in prepare() More...
void	exec (Object... args) throws Throwable
	Executes the bound statement with any bound buffers, also optionally allows binding placeholder buffer specifications and values to buffers defined in prepare() before executing the statement. More...
void	execArgs (Object[] vargs) throws Throwable
	Executes the bound statement with any bound buffers, also optionally allows binding placeholder buffer specifications and values given as a list in the single argument to the method to buffers defined in prepare() More...
int	affectedRows () throws Throwable
	Returns the number of rows affected by the last call to exec() More...
HashMap< String, Object >	getOutput () throws Throwable
	Retrieves output buffers as a hash; result sets will be returned as hashes of lists. More...
HashMap< String, Object >	getOutputRows () throws Throwable
	Retrieves output buffers as a hash; result sets will be returned as lists of hashes. More...
void	define () throws Throwable
	Performs an explicit define operation on the SQLStatement. More...
void	close () throws Throwable
	Closes the statement if it is open, however this method does not release the connection or transaction lock. More...
void	commit () throws Throwable
	Commits the transaction, releases the connection or the transaction lock according to the object used in the constructor and closes the statement. More...
void	rollback () throws Throwable
	Closes the SQLStatement, performs a transaction rollback, and releases the connection or the transaction lock according to the object used in the constructor, and closes the statement. More...
void	beginTransaction () throws Throwable
	Manually starts a transaction and allocates a connection or grabs the transaction lock according to the object used in the constructor. More...
boolean	next () throws Throwable
	Increments the row pointer when retrieving rows from a select statement; returns true if there is a row to retrieve, false if not. More...
boolean	valid () throws Throwable
	returns true if the object is currently pointing at a valid element, false if not (use when iterating with next()) More...
HashMap< String, Object >	fetchRow () throws Throwable
	Retrieves the current row as a Map<String, Object> where the keys are the column names and the values are the column values. More...
HashMap< String, Object >	getValue () throws Throwable
	Retrieves the current row as a Map<String, Object> where the keys are the column names and the values are the column values. More...
HashMap< String, Object > []	fetchRows (int rows) throws Throwable
	Retrieves a block of rows as a list of hashes with the maximum number of rows determined by the argument passed; automatically advances the row pointer; with this call it is not necessary to call next() More...
HashMap< String, Object > []	fetchRows () throws Throwable
	Retrieves all available rows as a list of hashes; automatically advances the row pointer; with this call it is not necessary to call next() More...
HashMap< String, Object >	fetchColumns (int rows) throws Throwable
	Retrieves a block of rows as a Map<String, Object> of lists with the maximum number of rows determined by the argument passed; automatically advances the row pointer; with this call it is not necessary to call next(). More...
HashMap< String, Object >	fetchColumns () throws Throwable
	Retrieves all available rows as a Map<String, Object> of lists; automatically advances the row pointer; with this call it is not necessary to call next(). More...
HashMap< String, Object >	describe () throws Throwable
	Describes columns in the statement result. More...
String	getSQL () throws Throwable
	Returns the current SQL string set with the call to prepare() or prepareRaw() or void if no SQL has been set. More...
boolean	active () throws Throwable
	Returns true if the object is currently active and has a connection or transaction lock allocated to it, or false if not. More...
boolean	currentThreadInTransaction () throws Throwable
	Returns true if the current thread is in a transaction (i.e. holds the transaction lock), false if not. More...
Public Member Methods inherited from org.qore.jni.QoreObjectWrapper
	QoreObjectWrapper (QoreObject obj)
	creates the wrapper object with the Qore object
void	release ()
	releases the Qore object; do not call any further methods on the object after this call
QoreObject	getQoreObject ()
	returns the Qore object
String	className ()
	returns the class name for the Qore object
boolean	instanceOf (String class_name)
	returns true if the object is an instance of the given class

Additional Inherited Members
Private Attributes inherited from org.qore.jni.QoreObjectWrapper
QoreObject	obj
	the wrapper Qore object

Detailed Description

Java wrapper for the Qore::SQL::AbstractSQLStatement class in Qore.

Example:

{
    AbstractSQLStatement stmt = ds.getSQLStatement();
    try {
        stmt.prepare("select * from table");
        stmt.exec();
        stmt.define();
        // note that the next() would implicitly execute exec() and define()
        while (stmt.next()) {
            Map<String, Object> row = stmt.fetchRow();
            process(row);
        }
        // release transaction lock on exit
        stmt.commit();
    } catch (Throwable e) {
        stmt.rollback();
        throw e;
    } finally {
        stmt.release();
    }
}

Member Function Documentation

active()

boolean org.qore.lang.AbstractSQLStatement.active ( ) throws Throwable

inline

Returns true if the object is currently active and has a connection or transaction lock allocated to it, or false if not.

Returns

true if the object is currently active and has a connection or transaction lock allocated to it, or false if not

Example:

if (stmt.active()) {
    stmt.commit();
}

affectedRows()

int org.qore.lang.AbstractSQLStatement.affectedRows ( ) throws Throwable

inline

Returns the number of rows affected by the last call to exec()

Returns

the number of rows affected by the last call to exec()

Example:

int rc = stmt.affectedRows();

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed; see the relevant DBI driver docs for more information

beginTransaction()

void org.qore.lang.AbstractSQLStatement.beginTransaction ( ) throws Throwable

inline

Manually starts a transaction and allocates a connection or grabs the transaction lock according to the object used in the constructor.

Example:

stmt.beginTransaction();

bind()

void org.qore.lang.AbstractSQLStatement.bind ( Object...  args ) throws Throwable

inline

Binds placeholder buffer specifications and values to buffers defined in prepare()

If the statement has not previously been prepared with the DB API, it will be implicitly prepared by this method call. This means that this call will cause a connection to be dedicated from a DatasourcePool object or the transaction lock to be grabbed with a Datasource object, depending on the argument to constructor.

Arguments to buffer specifications must be given in the same order as declared in the string given to the prepare() method.

Any arguments previously bound will be released when this call is made.

Note

You can also bind directly when calling exec() or execArgs() as a shortcut as well, in which case it's not necessary to make an extra call to this method.

Parameters

args	Arguments to placeholder specifications (if required by the underlying DBI driver) and bind by value arguments

Example:

stmt.prepare("insert into table (id, name) values (%v, %v)");
stmt.bind(h.get("id"), h.get("name"));
stmt.exec();

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications; see the relevant DBI driver docs for more information

See also

bindArgs(), bindPlaceholders(), bindPlaceholdersArgs(), bindValues(), and bindValuesArgs()

bindArgs()

void org.qore.lang.AbstractSQLStatement.bindArgs ( Object []  vargs ) throws Throwable

inline

Binds placeholder buffer specifications and values given as a list in the single argument to the method to buffers defined in prepare()

If the statement has not previously been prepared with the DB API, it will be implicitly prepared by this method call. This means that this call will cause a connection to be dedicated from a DatasourcePool object or the transaction lock to be grabbed with a Datasource object, depending on the argument to constructor.

Arguments to buffer specifications must be given in the same order as declared in the string given to the prepare() method.

Any arguments previously bound will be released when this call is made.

Note

You can also bind directly when calling exec() or execArgs() as a shortcut as well, in which case it's not necessary to make an extra call to this method.

Parameters

vargs

Arguments to placeholder specifications (if required by the underlying DBI driver) and bind by value arguments

Example:

stmt.prepare("insert into table (id, name) values (%v, %v)");
stmt.bindArgs(args);
stmt.exec();

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications; see the relevant DBI driver docs for more information

See also

bind(), bindPlaceholders(), bindPlaceholdersArgs(), bindValues(), and bindValuesArgs()

bindPlaceholders()

void org.qore.lang.AbstractSQLStatement.bindPlaceholders ( Object...  args ) throws Throwable

inline

Binds placeholder buffer specifications to buffers defined in prepare()

If the statement has not previously been prepared with the DB API, it will be implicitly prepared by this method call. This means that this call will cause a connection to be dedicated from a DatasourcePool object or the transaction lock to be grabbed with a Datasource object, depending on the argument to constructor.

Arguments to buffer specifications must be given in the same order as declared in the string given to the prepare() method. Only placeholder buffer specifications will be processed; value buffer specifications will be skipped by this method.

Any buffer specifications previously defined will be released when this call is made.

Note

You can also bind buffer specifications directly when calling exec() or execArgs() as a shortcut as well, in which case it's not necessary to make an extra call to this method.

Not all DBI drivers require binding placeholders specification.

Parameters

args	Arguments to placeholder specifications (if required by the underlying DBI driver)

Example:

stmt.prepare("begin select sysdate into :sd from dual", "date"); end;
stmt.bindPlaceholders(Type::Date);
ZonedDateTime d = stmt.getOutput().get("sd");

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications; see the relevant DBI driver docs for more information

See also

bind(), bindArgs(), bindPlaceholdersArgs(), bindValues(), and bindValuesArgs()

bindPlaceholdersArgs()

void org.qore.lang.AbstractSQLStatement.bindPlaceholdersArgs ( Object []  vargs ) throws Throwable

inline

Binds placeholder buffer specifications given as a list in the single argument to the method to buffers defined in prepare()

If the statement has not previously been prepared with the DB API, it will be implicitly prepared by this method call. This means that this call will cause a connection to be dedicated from a DatasourcePool object or the transaction lock to be grabbed with a Datasource object, depending on the argument to constructor.

Arguments to buffer specifications must be given in the same order as declared in the string given to the prepare() method. Only placeholder buffer specifications will be processed; value buffer specifications will be skipped by this method.

Any buffer specifications previously defined will be released when this call is made.

Note

You can also bind buffer specifications directly when calling exec() or execArgs() as a shortcut as well, in which case it's not necessary to make an extra call to this method.

Not all DBI drivers require binding placeholders specification.

Parameters

vargs

Arguments to placeholder specifications (if required by the underlying DBI driver)

Example:

stmt.prepare("begin select sysdate into :sd from dual", "date"); end;
stmt.bindPlaceholdersArgs(args);
ZonedDateTime d = stmt.getOutput().get("sd");

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications; see the relevant DBI driver docs for more information

See also

bind(), bindArgs(), bindPlaceholders(), bindValues(), and bindValuesArgs()

bindValues()

void org.qore.lang.AbstractSQLStatement.bindValues ( Object...  args ) throws Throwable

inline

Binds values to value buffer specifications to buffers defined in prepare()

If the statement has not previously been prepared with the DB API, it will be implicitly prepared by this method call. This means that this call will cause a connection to be dedicated from a DatasourcePool object or the transaction lock to be grabbed with a Datasource object, depending on the argument to constructor.

Arguments to buffer specifications must be given in the same order as declared in the string given to the prepare() method.

Any values previously bound will be released when this call is made.

Note

You can also bind directly when calling exec() or execArgs() as a shortcut as well, in which case it's not necessary to make an extra call to this method.

Parameters

args	Arguments to bind by value arguments

Example:

stmt.prepare("insert into table (id, name) values (%v, %v)");
stmt.exec(h.get("id"), h.get("name"));
stmt.exec();

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications; see the relevant DBI driver docs for more information

See also

bind(), bindArgs(), bindPlaceholders(), bindPlaceholdersArgs(), and bindValuesArgs().

bindValuesArgs()

void org.qore.lang.AbstractSQLStatement.bindValuesArgs ( Object []  vargs ) throws Throwable

inline

Binds values to value buffer specifications given as a list in the single argument to the method to value buffers defined in prepare()

If the statement has not previously been prepared with the DB API, it will be implicitly prepared by this method call. This means that this call will cause a connection to be dedicated from a DatasourcePool object or the transaction lock to be grabbed with a Datasource object, depending on the argument to constructor.

Arguments to buffer specifications must be given in the same order as declared in the string given to the prepare() method.

Any values previously bound will be released when this call is made.

Note

You can also bind directly when calling exec() or execArgs() as a shortcut as well, in which case it's not necessary to make an extra call to this method.

Parameters

vargs

Arguments to bind by value arguments

Example:

stmt.prepare("insert into table (id, name) values (%v, %v)");
stmt.bindValuesArgs(args);
stmt.exec();

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications; see the relevant DBI driver docs for more information

close()

void org.qore.lang.AbstractSQLStatement.close ( ) throws Throwable

inline

Closes the statement if it is open, however this method does not release the connection or transaction lock.

Example:

stmt.close();

commit()

void org.qore.lang.AbstractSQLStatement.commit ( ) throws Throwable

inline

Commits the transaction, releases the connection or the transaction lock according to the object used in the constructor and closes the statement.

Example:

stmt.commit();

Note

For possible exceptions; see DBI driver docs for the commit() method

currentThreadInTransaction()

boolean org.qore.lang.AbstractSQLStatement.currentThreadInTransaction ( ) throws Throwable

inline

Returns true if the current thread is in a transaction (i.e. holds the transaction lock), false if not.

Returns

true if the current thread is in a transaction (i.e. holds the transaction lock), false if not

Example:

boolean b = stmt.currentThreadInTransaction();

define()

void org.qore.lang.AbstractSQLStatement.define ( ) throws Throwable

inline

Performs an explicit define operation on the SQLStatement.

It is not encessary to call this method manually; define operations are implicitly executed when needed when retrieving values from a select statement

Example:

{
    AbstractSQLStatement stmt = ds.getSQLStatement();
    try {
        stmt.prepare("select * from table");
        stmt.exec();
        stmt.define();
        // note that the next() would implicitly execute exec() and define()
        while (stmt.next()) {
            Map<String, Object> row = stmt.fetchRow();
            process(row);
        }
        // release transaction lock on exit
        stmt.commit();
    } catch (Throwable e) {
        stmt.rollback();
        throw e;
    } finally {
        stmt.release();
    }
}

describe()

HashMap<String, Object> org.qore.lang.AbstractSQLStatement.describe ( ) throws Throwable

inline

Describes columns in the statement result.

Returns

a Map<String, Object> with (column_name: description_hash) format, where each description_hash has the following keys:

• "name": (string) the column name
• "type": (integer) the column type code (Qore type code)
• "maxsize": (integer) the maximum size of the column
• "native_type": (string) the database-specific name of the type
• "internal_id": (integer) the database-specific type code of the type

exec()

void org.qore.lang.AbstractSQLStatement.exec ( Object...  args ) throws Throwable

inline

Executes the bound statement with any bound buffers, also optionally allows binding placeholder buffer specifications and values to buffers defined in prepare() before executing the statement.

If the statement has not previously been prepared with the DB API, it will be implicitly prepared by this method call. This means that this call will cause a connection to be dedicated from a DatasourcePool object or the transaction lock to be grabbed with a Datasource object, depending on the argument to constructor.

Optional arguments to buffer specifications must be given in the same order as declared in the string given to the prepare() method.

If bind arguments are provided, any arguments previously bound will be released when this call is made.

After calling this method to execute the statement, to retrieve information about the call or output values bound in the call, call affectedRows(), getOutput(), or getOutputRows() as needed.

To retrieve rows from a select statement call either next() and fetchRow(), or fetchRows() or fetchColumns() as needed.

Parameters

args	Optional arguments to placeholder specifications (if required by the underlying DBI driver) and bind by value arguments can be given in the call to the method; if present, arguments are bound before the statement is executed

Example:

stmt.prepare("insert into table (id, name) values (%v, %v)");
stmt.exec(h.get("id"), h.get("name"));

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare(); the SQLStatement uses a DatasourcePool an the statement was prepared on another connection

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed; see the relevant DBI driver docs for more information

See also

execArgs()

execArgs()

void org.qore.lang.AbstractSQLStatement.execArgs ( Object []  vargs ) throws Throwable

inline

Executes the bound statement with any bound buffers, also optionally allows binding placeholder buffer specifications and values given as a list in the single argument to the method to buffers defined in prepare()

If the statement has not previously been prepared with the DB API, it will be implicitly prepared by this method call. This means that this call will cause a connection to be dedicated from a DatasourcePool object or the transaction lock to be grabbed with a Datasource object, depending on the argument to constructor.

Optional arguments to buffer specifications must be given in the same order as declared in the string given to the prepare() method.

If bind arguments are provided, any arguments previously bound will be released when this call is made.

After calling this method to execute the statement, to retrieve information about the call or output values bound in the call, call affectedRows(), getOutput(), or getOutputRows() as needed.

To retrieve rows from a select statement call either next() and fetchRow(), or fetchRows() or fetchColumns() as needed.

Parameters

vargs

Optional arguments to placeholder specifications (if required by the underlying DBI driver) and bind by value arguments can be given in the call to the method; if present, arguments are bound before the statement is executed

Example:

stmt.prepare("insert into table (id, name) values (%v, %v)");
stmt.execArgs(args);

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw(); the SQLStatement uses a DatasourcePool an the statement was prepared on another connection

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed; see the relevant DBI driver docs for more information

See also

exec()

fetchColumns() [1/2]

HashMap<String, Object> org.qore.lang.AbstractSQLStatement.fetchColumns ( int  rows ) throws Throwable

inline

Retrieves a block of rows as a Map<String, Object> of lists with the maximum number of rows determined by the argument passed; automatically advances the row pointer; with this call it is not necessary to call next().

If the argument passed is omitted or less than or equal to zero, then all available rows from the current row position are retrieved, also if fewer rows are available than requested then only the rows available are retrieved.

Parameters

rows	The maximum number of rows to retrieve, if this argument is omitted, negative, or equal to zero, then all available rows from the current row position are retrieved

Returns

a Map<String, Object> (giving column names) of lists (giving row values for each column) of data returned; each list will have at most rows elements (unless rows is negative, in which case all available rows are returned). If the total number of rows available is less than rows (if rows is positive), then the last data returned by this method may return short lists. If no more rows are available, then an empty Map<String, Object> is returned

Example:

Map<String, Object> h = stmt.fetchColumns(-1);

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

• There is no need to call next() when calling this method; the method automatically iterates through the given number of rows
• Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed or when row values are retrieved; see the relevant DBI driver docs for more information

fetchColumns() [2/2]

HashMap<String, Object> org.qore.lang.AbstractSQLStatement.fetchColumns ( ) throws Throwable

inline

Retrieves all available rows as a Map<String, Object> of lists; automatically advances the row pointer; with this call it is not necessary to call next().

Example:

Map<String, Object> h = stmt.fetchColumns();

Returns

a Map<String, Object> (giving column names) of lists (giving row values for each column) of data returned; each list will have at most rows elements (unless rows is negative, in which case all available rows are returned). If the total number of rows available is less than rows (if rows is positive), then the last data returned by this method may return short lists. If no more rows are available, then an empty Map<String, Object> is returned

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

• There is no need to call next() when calling this method; the method automatically iterates through the given number of rows
• Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed or when row values are retrieved; see the relevant DBI driver docs for more information

fetchRow()

HashMap<String, Object> org.qore.lang.AbstractSQLStatement.fetchRow ( ) throws Throwable

inline

Retrieves the current row as a Map<String, Object> where the keys are the column names and the values are the column values.

Use with next() to iterate through the results of a select statement one row at a time

Returns

the current row as a Map<String, Object> where the keys are the column names and the values are the column values

Example:

while (stmt.next()) {
    Map<String, Object> h = stmt.fetchRow();
    process(h);
}

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed or when row values are retrieved; see the relevant DBI driver docs for more information

fetchRows() [1/2]

HashMap<String, Object> [] org.qore.lang.AbstractSQLStatement.fetchRows ( int  rows ) throws Throwable

inline

Retrieves a block of rows as a list of hashes with the maximum number of rows determined by the argument passed; automatically advances the row pointer; with this call it is not necessary to call next()

If the argument passed is omitted or less than or equal to zero, then all available rows from the current row position are retrieved, also if fewer rows are available than requested then only the rows available are retrieved.

If no more rows are available then an empty list is returned.

Parameters

rows	The maximum number of rows to retrieve, if this argument is omitted, negative, or equal to zero, then all available rows from the current row position are retrieved

Example:

Map<String, Object>[] l = stmt.fetchRows(-1);

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

• There is no need to call next() when calling this method; the method automatically iterates through the given number of rows
• Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed or when row values are retrieved; see the relevant DBI driver docs for more information

fetchRows() [2/2]

HashMap<String, Object> [] org.qore.lang.AbstractSQLStatement.fetchRows ( ) throws Throwable

inline

Retrieves all available rows as a list of hashes; automatically advances the row pointer; with this call it is not necessary to call next()

Example:

Map<String, Object>[] l = stmt.fetchRows();

If no more rows are available then an empty list is returned.

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

• There is no need to call next() when calling this method; the method automatically iterates through the given number of rows
• Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed or when row values are retrieved; see the relevant DBI driver docs for more information

getOutput()

HashMap<String, Object> org.qore.lang.AbstractSQLStatement.getOutput ( ) throws Throwable

inline

Retrieves output buffers as a hash; result sets will be returned as hashes of lists.

Returns

Returns a Map<String, Object> of output buffers; result sets will be returned as hashes of lists. Each key in the Map<String, Object> is the same as the name given to the placeholder specification in the call to prepare() or prepareRaw()

Example:

Map<String, Object> h = stmt.getOutput();

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed or when output values are retrieved; see the relevant DBI driver docs for more information

getOutputRows()

HashMap<String, Object> org.qore.lang.AbstractSQLStatement.getOutputRows ( ) throws Throwable

inline

Retrieves output buffers as a hash; result sets will be returned as lists of hashes.

Returns

Retrieves output buffers as a hash; result sets will be returned as lists of hashes. Each key in the Map<String, Object> is the same as the name given to the placeholder specification in the call to prepare() or prepareRaw()

Example:

Map<String, Object> h = stmt.getOutputRows();

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed or when output values are retrieved; see the relevant DBI driver docs for more information

getSQL()

String org.qore.lang.AbstractSQLStatement.getSQL ( ) throws Throwable

inline

Returns the current SQL string set with the call to prepare() or prepareRaw() or void if no SQL has been set.

Returns

Returns the current SQL string set with the call to prepare() or prepareRaw() or void if no SQL has been set

Example:

String sql = stmt.getSQL();

getValue()

HashMap<String, Object> org.qore.lang.AbstractSQLStatement.getValue ( ) throws Throwable

inline

Retrieves the current row as a Map<String, Object> where the keys are the column names and the values are the column values.

Use with next() to iterate through the results of a select statement one row at a time

Returns

the current row as a Map<String, Object> where the keys are the column names and the values are the column values

Example:

while (stmt.next()) {
    Map<String, Object> h = stmt.getValue();
    process(h);
}

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

• Equivalent to fetchRow()
• Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed or when row values are retrieved; see the relevant DBI driver docs for more information

next()

boolean org.qore.lang.AbstractSQLStatement.next ( ) throws Throwable

inline

Increments the row pointer when retrieving rows from a select statement; returns true if there is a row to retrieve, false if not.

If this method returns true, then call fetchRow() afterwards to retrieve the row

Returns

true if there is a row to retrieve, false if not (no more rows to be retrieved)

Example:

while (stmt.next()) {
    Map<String, Object> h = stmt.fetchRow();
    process(h);
}

Exceptions

SQLSTATEMENT-ERROR

No SQL has been set with prepare() or prepareRaw()

Note

Exceptions could be thrown by the DBI driver when the statement is prepared or when attempting to bind the given arguments to buffer specifications or when the statement is executed; see the relevant DBI driver docs for more information

prepare()

void org.qore.lang.AbstractSQLStatement.prepare ( String  sql, Object...  args  ) throws Throwable

inline

Saves an SQL statement that will be prepared and executed later, along with optional arguments.

The statement is actually only prepared when used for the first time, this is so that SQLStatement objects created with DatasourcePool objects use the DatasourcePool more efficiently, as many drivers require the actual DB API prepare call to be made on the same connection as the connection the statement will be executed on as well.

Note

This method parses the SQL string for placeholders and bind by value tokens (%v); for a version of this method that does not parse the SQL string for placeholders and bind by value tokens, see prepareRaw().

Parameters

sql	The SQL string to prepare for execution on the DB server
args	The arguments for any bind placeholders

Example:

stmt.prepare("select * from table where id = %v");

prepareRaw()

void org.qore.lang.AbstractSQLStatement.prepareRaw ( String  sql ) throws Throwable

inline

Saves an SQL statement that will be prepared and executed later.

The statement is actually only prepared when used for the first time, this is so that SQLStatement objects created with DatasourcePool objects use the DatasourcePool more efficiently, as many drivers require the actual DB API prepare call to be made on the same connection as the connection the statement will be executed on as well.

Note

This method does not parse the SQL string for placeholders and bind by value tokens (%v); for a version of this method that does parse the SQL string for placeholders and bind by value tokens, see prepare().

Parameters

sql	The SQL string to prepare for execution on the DB server

Example:

stmt.prepareRaw("select * from table");

rollback()

void org.qore.lang.AbstractSQLStatement.rollback ( ) throws Throwable

inline

Closes the SQLStatement, performs a transaction rollback, and releases the connection or the transaction lock according to the object used in the constructor, and closes the statement.

Example:

stmt.rollback();

Note

For possible exceptions; see DBI driver docs for the rollback() method

valid()

boolean org.qore.lang.AbstractSQLStatement.valid ( ) throws Throwable

inline

returns true if the object is currently pointing at a valid element, false if not (use when iterating with next())

Returns

true if the object is currently pointing at a valid element, false if not

Example:

if (i.valid()) {
    process(i.getValue());
}

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The documentation for this class was generated from the following file:

• /tmp/module-jni/src/java/org/qore/lang/AbstractSQLStatement.java