//$Id: Restrictions.java 7844 2005-08-11 07:26:26Z oneovthafew $
package org.hibernate.criterion;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import org.hibernate.type.Type;
import org.hibernate.util.ArrayHelper;
/**
* The <tt>criterion</tt> package may be used by applications as a framework for building
* new kinds of <tt>Criterion</tt>. However, it is intended that most applications will
* simply use the built-in criterion types via the static factory methods of this class.
*
* @see org.hibernate.Criteria
* @see Projections factory methods for <tt>Projection</tt> instances
* @author Gavin King
*/
public class Restrictions {
Restrictions() {
//cannot be instantiated
}
/**
* Apply an "equal" constraint to the identifier property
* @param propertyName
* @param value
* @return Criterion
*/
public static Criterion idEq(Object value) {
return new IdentifierEqExpression(value);
}
/**
* Apply an "equal" constraint to the named property
* @param propertyName
* @param value
* @return Criterion
*/
public static SimpleExpression eq(String propertyName, Object value) {
return new SimpleExpression(propertyName, value, "=");
}
/**
* Apply a "not equal" constraint to the named property
* @param propertyName
* @param value
* @return Criterion
*/
public static SimpleExpression ne(String propertyName, Object value) {
return new SimpleExpression(propertyName, value, "<>");
}
/**
* Apply a "like" constraint to the named property
* @param propertyName
* @param value
* @return Criterion
*/
public static SimpleExpression like(String propertyName, Object value) {
return new SimpleExpression(propertyName, value, " like ");
}
/**
* Apply a "like" constraint to the named property
* @param propertyName
* @param value
* @return Criterion
*/
public static SimpleExpression like(String propertyName, String value, MatchMode matchMode) {
return new SimpleExpression(propertyName, matchMode.toMatchString(value), " like " );
}
/**
* A case-insensitive "like", similar to Postgres <tt>ilike</tt>
* operator
*
* @param propertyName
* @param value
* @return Criterion
*/
public static Criterion ilike(String propertyName, String value, MatchMode matchMode) {
return new IlikeExpression(propertyName, value, matchMode);
}
/**
* A case-insensitive "like", similar to Postgres <tt>ilike</tt>
* operator
*
* @param propertyName
* @param value
* @return Criterion
*/
public static Criterion ilike(String propertyName, Object value) {
return new IlikeExpression(propertyName, value);
}
/**
* Apply a "greater than" constraint to the named property
* @param propertyName
* @param value
* @return Criterion
*/
public static SimpleExpression gt(String propertyName, Object value) {
return new SimpleExpression(propertyName, value, ">");
}
/**
* Apply a "less than" constraint to the named property
* @param propertyName
* @param value
* @return Criterion
*/
public static SimpleExpression lt(String propertyName, Object value) {
return new SimpleExpression(propertyName, value, "<");
}
/**
* Apply a "less than or equal" constraint to the named property
* @param propertyName
* @param value
* @return Criterion
*/
public static SimpleExpression le(String propertyName, Object value) {
return new SimpleExpression(propertyName, value, "<=");
}
/**
* Apply a "greater than or equal" constraint to the named property
* @param propertyName
* @param value
* @return Criterion
*/
public static SimpleExpression ge(String propertyName, Object value) {
return new SimpleExpression(propertyName, value, ">=");
}
/**
* Apply a "between" constraint to the named property
* @param propertyName
* @param lo value
* @param hi value
* @return Criterion
*/
public static Criterion between(String propertyName, Object lo, Object hi) {
return new BetweenExpression(propertyName, lo, hi);
}
/**
* Apply an "in" constraint to the named property
* @param propertyName
* @param values
* @return Criterion
*/
public static Criterion in(String propertyName, Object[] values) {
return new InExpression(propertyName, values);
}
/**
* Apply an "in" constraint to the named property
* @param propertyName
* @param values
* @return Criterion
*/
public static Criterion in(String propertyName, Collection values) {
return new InExpression( propertyName, values.toArray() );
}
/**
* Apply an "is null" constraint to the named property
* @return Criterion
*/
public static Criterion isNull(String propertyName) {
return new NullExpression(propertyName);
}
/**
* Apply an "equal" constraint to two properties
*/
public static PropertyExpression eqProperty(String propertyName, String otherPropertyName) {
return new PropertyExpression(propertyName, otherPropertyName, "=");
}
/**
* Apply a "not equal" constraint to two properties
*/
public static PropertyExpression neProperty(String propertyName, String otherPropertyName) {
return new PropertyExpression(propertyName, otherPropertyName, "<>");
}
/**
* Apply a "less than" constraint to two properties
*/
public static PropertyExpression ltProperty(String propertyName, String otherPropertyName) {
return new PropertyExpression(propertyName, otherPropertyName, "<");
}
/**
* Apply a "less than or equal" constraint to two properties
*/
public static PropertyExpression leProperty(String propertyName, String otherPropertyName) {
return new PropertyExpression(propertyName, otherPropertyName, "<=");
}
/**
* Apply a "greater than" constraint to two properties
*/
public static PropertyExpression gtProperty(String propertyName, String otherPropertyName) {
return new PropertyExpression(propertyName, otherPropertyName, ">");
}
/**
* Apply a "greater than or equal" constraint to two properties
*/
public static PropertyExpression geProperty(String propertyName, String otherPropertyName) {
return new PropertyExpression(propertyName, otherPropertyName, ">=");
}
/**
* Apply an "is not null" constraint to the named property
* @return Criterion
*/
public static Criterion isNotNull(String propertyName) {
return new NotNullExpression(propertyName);
}
/**
* Return the conjuction of two expressions
*
* @param lhs
* @param rhs
* @return Criterion
*/
public static LogicalExpression and(Criterion lhs, Criterion rhs) {
return new LogicalExpression(lhs, rhs, "and");
}
/**
* Return the disjuction of two expressions
*
* @param lhs
* @param rhs
* @return Criterion
*/
public static LogicalExpression or(Criterion lhs, Criterion rhs) {
return new LogicalExpression(lhs, rhs, "or");
}
/**
* Return the negation of an expression
*
* @param expression
* @return Criterion
*/
public static Criterion not(Criterion expression) {
return new NotExpression(expression);
}
/**
* Apply a constraint expressed in SQL, with the given JDBC
* parameters. Any occurrences of <tt>{alias}</tt> will be
* replaced by the table alias.
*
* @param sql
* @param values
* @param types
* @return Criterion
*/
public static Criterion sqlRestriction(String sql, Object[] values, Type[] types) {
return new SQLCriterion(sql, values, types);
}
/**
* Apply a constraint expressed in SQL, with the given JDBC
* parameter. Any occurrences of <tt>{alias}</tt> will be replaced
* by the table alias.
*
* @param sql
* @param value
* @param type
* @return Criterion
*/
public static Criterion sqlRestriction(String sql, Object value, Type type) {
return new SQLCriterion(sql, new Object[] { value }, new Type[] { type } );
}
/**
* Apply a constraint expressed in SQL. Any occurrences of <tt>{alias}</tt>
* will be replaced by the table alias.
*
* @param sql
* @return Criterion
*/
public static Criterion sqlRestriction(String sql) {
return new SQLCriterion(sql, ArrayHelper.EMPTY_OBJECT_ARRAY, ArrayHelper.EMPTY_TYPE_ARRAY);
}
/**
* Group expressions together in a single conjunction (A and B and C...)
*
* @return Conjunction
*/
public static Conjunction conjunction() {
return new Conjunction();
}
/**
* Group expressions together in a single disjunction (A or B or C...)
*
* @return Conjunction
*/
public static Disjunction disjunction() {
return new Disjunction();
}
/**
* Apply an "equals" constraint to each property in the
* key set of a <tt>Map</tt>
*
* @param propertyNameValues a map from property names to values
* @return Criterion
*/
public static Criterion allEq(Map propertyNameValues) {
Conjunction conj = conjunction();
Iterator iter = propertyNameValues.entrySet().iterator();
while ( iter.hasNext() ) {
Map.Entry me = (Map.Entry) iter.next();
conj.add( eq( (String) me.getKey(), me.getValue() ) );
}
return conj;
}
/**
* Constrain a collection valued property to be empty
*/
public static Criterion isEmpty(String propertyName) {
return new EmptyExpression(propertyName);
}
/**
* Constrain a collection valued property to be non-empty
*/
public static Criterion isNotEmpty(String propertyName) {
return new NotEmptyExpression(propertyName);
}
/**
* Constrain a collection valued property by size
*/
public static Criterion sizeEq(String propertyName, int size) {
return new SizeExpression(propertyName, size, "=");
}
/**
* Constrain a collection valued property by size
*/
public static Criterion sizeNe(String propertyName, int size) {
return new SizeExpression(propertyName, size, "<>");
}
/**
* Constrain a collection valued property by size
*/
public static Criterion sizeGt(String propertyName, int size) {
return new SizeExpression(propertyName, size, "<");
}
/**
* Constrain a collection valued property by size
*/
public static Criterion sizeLt(String propertyName, int size) {
return new SizeExpression(propertyName, size, ">");
}
/**
* Constrain a collection valued property by size
*/
public static Criterion sizeGe(String propertyName, int size) {
return new SizeExpression(propertyName, size, "<=");
}
/**
* Constrain a collection valued property by size
*/
public static Criterion sizeLe(String propertyName, int size) {
return new SizeExpression(propertyName, size, ">=");
}
public static NaturalIdentifier naturalId() {
return new NaturalIdentifier();
}
}
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