Package io.github.blyznytsiaorg.bibernate.dao.utils

Class HqlQueryInfo

java.lang.Object

io.github.blyznytsiaorg.bibernate.dao.utils.HqlQueryInfo

public class HqlQueryInfo
extends Object

Represents information extracted from an HQL (Bibernate Query Language) query. Parses the SELECT, JOIN FETCH, JOIN, and WHERE clauses to provide details about the HQL query.

Since:

1.0

Author:

Blyzhnytsia Team

Field Summary

Fields

Modifier and Type	Field	Description
private String	conditions
static final String	DOT	Dot separator constant used in constructing entity aliases.
private String	entityAlias
private final Class<?>	entityClass
private String	entityName
private final List<String>	fetchJoins
private static final Pattern	JOIN_FETCH_PATTERN	Regular expression pattern for extracting JOIN FETCH clauses from an HQL query.
private static final Pattern	JOIN_PATTERN	Regular expression pattern for extracting JOIN clauses from an HQL query.
private final List<String>	joins
private static final Pattern	SELECT_PATTERN	Regular expression pattern for extracting SELECT clause from an HQL query.
private static final Pattern	WHERE_PATTERN	Regular expression pattern for extracting WHERE clause from an HQL query.

Constructor Summary

Constructors

Constructor	Description
HqlQueryInfo(String hqlQuery, Class<?> entityClass)	Constructs an instance of HqlQueryInfo by parsing the provided HQL query and associating it with a specified entity class.

Method Summary

Modifier and Type	Method	Description
void	addFetchJoin(String fetchJoin)	Adds a JOIN FETCH clause to the list of fetch joins.
void	addJoin(String join)	Adds a JOIN clause to the list of joins.
void	setConditions(String conditions)	Sets the conditions obtained from the WHERE clause.
void	setEntityAlias(String entityAlias)	Sets the entity alias obtained from the SELECT clause.
void	setEntityName(String entityName)	Sets the entity name obtained from the SELECT clause.
String	toNativeSql()	Converts the HQL query information into native SQL format based on the associated entity class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

SELECT_PATTERN

private static final Pattern SELECT_PATTERN

Regular expression pattern for extracting SELECT clause from an HQL query.

JOIN_FETCH_PATTERN

private static final Pattern JOIN_FETCH_PATTERN

Regular expression pattern for extracting JOIN FETCH clauses from an HQL query.

JOIN_PATTERN

private static final Pattern JOIN_PATTERN

Regular expression pattern for extracting JOIN clauses from an HQL query.

WHERE_PATTERN

private static final Pattern WHERE_PATTERN

Regular expression pattern for extracting WHERE clause from an HQL query.

DOT

public static final String DOT

Dot separator constant used in constructing entity aliases.

See Also:

• Constant Field Values

entityName

private String entityName

entityAlias

private String entityAlias

conditions

private String conditions

joins

private final List<String> joins

fetchJoins

private final List<String> fetchJoins

entityClass

private final Class<?> entityClass

Constructor Details

HqlQueryInfo

public HqlQueryInfo(String hqlQuery,
 Class<?> entityClass)

Constructs an instance of HqlQueryInfo by parsing the provided HQL query and associating it with a specified entity class.

Parameters:

hqlQuery - The HQL query to be parsed.

entityClass - The entity class associated with the HQL query.

Method Details

setEntityName

public void setEntityName(String entityName)

Sets the entity name obtained from the SELECT clause.

Parameters:

entityName - The entity name.

setEntityAlias

public void setEntityAlias(String entityAlias)

Sets the entity alias obtained from the SELECT clause.

Parameters:

entityAlias - The entity alias.

setConditions

public void setConditions(String conditions)

Sets the conditions obtained from the WHERE clause.

Parameters:

conditions - The conditions.

addJoin

public void addJoin(String join)

Adds a JOIN clause to the list of joins.

Parameters:

join - The JOIN clause.

addFetchJoin

public void addFetchJoin(String fetchJoin)

Adds a JOIN FETCH clause to the list of fetch joins.

Parameters:

fetchJoin - The JOIN FETCH clause.

toNativeSql

public String toNativeSql()

Converts the HQL query information into native SQL format based on the associated entity class.

Returns:

The native SQL representation of the HQL query information.