org.hibernate.criterion.CriteriaQuery.java Source code

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Here is the source code for org.hibernate.criterion.CriteriaQuery.java

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.criterion;

import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.TypedValue;
import org.hibernate.type.Type;

/**
 * An instance of <tt>CriteriaQuery</tt> is passed to criterion, 
 * order and projection instances when actually compiling and
 * executing the query. This interface is not used by application
 * code.
 * 
 * @author Gavin King
 */
public interface CriteriaQuery {
    /**
     * Provides access to the SessionFactory
     *
     * @return The SessionFactory
     */
    public SessionFactoryImplementor getFactory();

    /**
     * Resolve a property path to the name of the column it maps to.  Ignores projection aliases.
     *
     * @param criteria The overall criteria
     * @param propertyPath The property path to resolve
     *
     * @return The column name
     *
     * @throws HibernateException if the property maps to more than 1 column, or if the property could not be resolved
     *
     * @see #getColumns
     */
    public String getColumn(Criteria criteria, String propertyPath) throws HibernateException;

    /**
     * Resolve a property path to the names of the columns it maps to.  Ignores projection aliases
     *
     * @param criteria The criteria
     * @param propertyPath The property path to resolve
     *
     * @return The column names
     *
     * @throws HibernateException if the property maps to more than 1 column, or if the property could not be resolved
     */
    public String[] getColumns(String propertyPath, Criteria criteria) throws HibernateException;

    /**
     * Get the names of the columns mapped by a property path; if the property path is not found in criteria, try
     * the "outer" query.  Projection aliases are ignored.
     *
     * @param criteria The criteria
     * @param propertyPath The property path to resolve
     *
     * @return The column names
     *
     * @throws HibernateException if the property could not be resolved
     */
    public String[] findColumns(String propertyPath, Criteria criteria) throws HibernateException;

    /**
     * Get the type of a property path.
     *
     * @param criteria The criteria
     * @param propertyPath The property path to resolve
     *
     * @return The type
     *
     * @throws HibernateException if the property could not be resolved
     */
    public Type getType(Criteria criteria, String propertyPath) throws HibernateException;

    /**
     * Get the names of the columns mapped by a property path.  Here, the property path can refer to
     * a projection alias.
     *
     * @param criteria The criteria
     * @param propertyPath The property path to resolve or projection alias
     *
     * @return The column names
     *
     * @throws HibernateException if the property/alias could not be resolved
     */
    public String[] getColumnsUsingProjection(Criteria criteria, String propertyPath) throws HibernateException;

    /**
     * Get the type of a property path.  Here, the property path can refer to a projection alias.
     *
     * @param criteria The criteria
     * @param propertyPath The property path to resolve or projection alias
     *
     * @return The type
     *
     * @throws HibernateException if the property/alias could not be resolved
     */
    public Type getTypeUsingProjection(Criteria criteria, String propertyPath) throws HibernateException;

    /**
     * Build a typed-value for the property/value combo.  Essentially the same as manually building a TypedValue
     * using the given value and the resolved type using {@link #getTypeUsingProjection}.
     *
     * @param criteria The criteria query
     * @param propertyPath The property path/alias to resolve to type.
     * @param value The value
     *
     * @return The TypedValue
     *
     * @throws HibernateException if the property/alias could not be resolved
     */
    public TypedValue getTypedValue(Criteria criteria, String propertyPath, Object value) throws HibernateException;

    /**
     * Get the entity name of an entity
     *
     * @param criteria The criteria
     *
     * @return The entity name
     */
    public String getEntityName(Criteria criteria);

    /**
     * Get the entity name of an entity, taking into account the qualifier of the property path
     *
     * @param criteria The criteria
     * @param propertyPath The property path that (supposedly) references an entity
     *
     * @return The entity name
     */
    public String getEntityName(Criteria criteria, String propertyPath);

    /**
     * Get the root table alias of an entity
     *
     * @param criteria The criteria
     *
     * @return The SQL table alias for the given criteria
     */
    public String getSQLAlias(Criteria criteria);

    /**
     * Get the root table alias of an entity, taking into account
     * the qualifier of the property path
     *
     * @param criteria The criteria
     * @param propertyPath The property path whose SQL alias should be returned.
     *
     * @return The SQL table alias for the given criteria
     */
    public String getSQLAlias(Criteria criteria, String propertyPath);

    /**
     * Get the property name, given a possibly qualified property name
     *
     * @param propertyName The (possibly qualified) property name
     *
     * @return The simple property name
     */
    public String getPropertyName(String propertyName);

    /**
     * Get the identifier column names of this entity
     *
     * @param criteria The criteria
     *
     * @return The identifier column names
     */
    public String[] getIdentifierColumns(Criteria criteria);

    /**
     * Get the identifier type of this entity
     *
     * @param criteria The criteria
     *
     * @return The identifier type.
     */
    public Type getIdentifierType(Criteria criteria);

    /**
     * Build a TypedValue for the given identifier value.
     *
     * @param criteria The criteria whose identifier is referenced.
     * @param value The identifier value
     *
     * @return The TypedValue
     */
    public TypedValue getTypedIdentifierValue(Criteria criteria, Object value);

    /**
     * Generate a unique SQL alias
     *
     * @return The generated alias
     */
    public String generateSQLAlias();
}