EmptyMetadata (Querydsl - Core module 5.0.0 API)

java.lang.Object
- com.querydsl.core.EmptyMetadata

All Implemented Interfaces:

QueryMetadata, java.io.Serializable
```
public final class EmptyMetadata
extends java.lang.Object
implements QueryMetadata
```
EmptyMetadata provides an immutable empty QueryMetadata instance.
Modification methods throw UnsupportedOperationException.

Author:

tiwe

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

static QueryMetadata DEFAULT

Fields
Modifier and Type	Field and Description
`static QueryMetadata`	`DEFAULT`

Constructor Summary

Constructors
Constructor and Description

EmptyMetadata()

Constructors
Constructor and Description
`EmptyMetadata()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addFlag(QueryFlag flag)` Add the given query flag
`void`	`addGroupBy(Expression<?> o)` Add the given group by expressions
`void`	`addHaving(Predicate o)` Add the given having expressions
`void`	`addJoin(JoinType joinType, Expression<?> expr)` Add the given query join
`void`	`addJoinCondition(Predicate o)` Add the given join condition to the last given join
`void`	`addJoinFlag(JoinFlag flag)` Add the given join flag to the last given join
`void`	`addOrderBy(OrderSpecifier<?> o)` Add the given order specifiers
`void`	`addWhere(Predicate o)` Add the given where expressions
`void`	`clearOrderBy()` Clear the order expressions
`void`	`clearWhere()` Clear the where expressions
`QueryMetadata`	`clone()` Clone this QueryMetadata instance
`java.util.Set<QueryFlag>`	`getFlags()` Get all query flags
`java.util.List<Expression<?>>`	`getGroupBy()` Get the group by expressions
`Predicate`	`getHaving()` Get the having expressions
`java.util.List<JoinExpression>`	`getJoins()` Get the query joins
`QueryModifiers`	`getModifiers()` Get the QueryModifiers
`java.util.List<OrderSpecifier<?>>`	`getOrderBy()` Get the OrderSpecifiers
`java.util.Map<ParamExpression<?>,java.lang.Object>`	`getParams()` Get the parameter bindings
`Expression<?>`	`getProjection()` Get the projection
`Predicate`	`getWhere()` Get the expressions aggregated into a single boolean expression or null, if none where defined
`boolean`	`hasFlag(QueryFlag flag)` Return whether the given query flag is applied
`boolean`	`isDistinct()` Get whether the projection is distinct
`boolean`	`isUnique()` Get whether the projection is unique
`void`	`removeFlag(QueryFlag flag)` Remove the given query flag
`void`	`reset()` Reset the projection
`void`	`setDistinct(boolean distinct)` Set the distinct flag
`void`	`setLimit(java.lang.Long limit)` Set the maximum number of rows
`void`	`setModifiers(QueryModifiers restriction)` Set the query modifiers limit and offset
`void`	`setOffset(java.lang.Long offset)` Set the number of skipped rows
`<T> void`	`setParam(ParamExpression<T> param, T value)` Bind the value for the given parameter expression
`void`	`setProjection(Expression<?> o)` Set the projection
`void`	`setUnique(boolean unique)` Set the unique flag
`void`	`setValidate(boolean v)` Set the validate flag

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEFAULT
```
public static final QueryMetadata DEFAULT
```
- Constructor Detail
  - EmptyMetadata
```
public EmptyMetadata()
```
- Method Detail
  - addGroupBy
```
public void addGroupBy(Expression<?> o)
```
    Description copied from interface: QueryMetadata
    
    Add the given group by expressions
    
    Specified by:
    
    addGroupBy in interface QueryMetadata
    
    Parameters:
    
    o - group by expressions
  - addHaving
```
public void addHaving(Predicate o)
```
    Description copied from interface: QueryMetadata
    
    Add the given having expressions
    
    Specified by:
    
    addHaving in interface QueryMetadata
    
    Parameters:
    
    o - having conditions
  - addJoin
```
public void addJoin(JoinType joinType,
                    Expression<?> expr)
```
    Description copied from interface: QueryMetadata
    
    Add the given query join
    
    Specified by:
    
    addJoin in interface QueryMetadata
    
    Parameters:
    
    joinType - type of join
    
    expr - join target
  - addJoinCondition
```
public void addJoinCondition(Predicate o)
```
    Description copied from interface: QueryMetadata
    
    Add the given join condition to the last given join
    
    Specified by:
    
    addJoinCondition in interface QueryMetadata
    
    Parameters:
    
    o - join condition
  - addOrderBy
```
public void addOrderBy(OrderSpecifier<?> o)
```
    Description copied from interface: QueryMetadata
    
    Add the given order specifiers
    
    Specified by:
    
    addOrderBy in interface QueryMetadata
    
    Parameters:
    
    o - order
  - setProjection
```
public void setProjection(Expression<?> o)
```
    Description copied from interface: QueryMetadata
    
    Set the projection
    
    Specified by:
    
    setProjection in interface QueryMetadata
    
    Parameters:
    
    o - projection
  - addWhere
```
public void addWhere(Predicate o)
```
    Description copied from interface: QueryMetadata
    
    Add the given where expressions
    
    Specified by:
    
    addWhere in interface QueryMetadata
    
    Parameters:
    
    o - where condition
  - clearOrderBy
```
public void clearOrderBy()
```
    Description copied from interface: QueryMetadata
    
    Clear the order expressions
    
    Specified by:
    
    clearOrderBy in interface QueryMetadata
  - clearWhere
```
public void clearWhere()
```
    Description copied from interface: QueryMetadata
    
    Clear the where expressions
    
    Specified by:
    
    clearWhere in interface QueryMetadata
  - clone
```
public QueryMetadata clone()
```
    Description copied from interface: QueryMetadata
    
    Clone this QueryMetadata instance
    
    Specified by:
    
    clone in interface QueryMetadata
    
    Overrides:
    
    clone in class java.lang.Object
    
    Returns:
    
    new QueryMetadata instance with cloned state
  - getGroupBy
```
public java.util.List<Expression<?>> getGroupBy()
```
    Description copied from interface: QueryMetadata
    
    Get the group by expressions
    
    Specified by:
    
    getGroupBy in interface QueryMetadata
    
    Returns:
    
    group by
  - getHaving
```
public Predicate getHaving()
```
    Description copied from interface: QueryMetadata
    
    Get the having expressions
    
    Specified by:
    
    getHaving in interface QueryMetadata
    
    Returns:
    
    having condition, or null if none set
  - getJoins
```
public java.util.List<JoinExpression> getJoins()
```
    Description copied from interface: QueryMetadata
    
    Get the query joins
    
    Specified by:
    
    getJoins in interface QueryMetadata
    
    Returns:
    
    joins
  - getModifiers
```
public QueryModifiers getModifiers()
```
    Description copied from interface: QueryMetadata
    
    Get the QueryModifiers
    
    Specified by:
    
    getModifiers in interface QueryMetadata
    
    Returns:
    
    modifiers
  - getOrderBy
```
public java.util.List<OrderSpecifier<?>> getOrderBy()
```
    Description copied from interface: QueryMetadata
    
    Get the OrderSpecifiers
    
    Specified by:
    
    getOrderBy in interface QueryMetadata
    
    Returns:
    
    order by
  - getProjection
```
public Expression<?> getProjection()
```
    Description copied from interface: QueryMetadata
    
    Get the projection
    
    Specified by:
    
    getProjection in interface QueryMetadata
    
    Returns:
    
    projection
  - getParams
```
public java.util.Map<ParamExpression<?>,java.lang.Object> getParams()
```
    Description copied from interface: QueryMetadata
    
    Get the parameter bindings
    
    Specified by:
    
    getParams in interface QueryMetadata
    
    Returns:
    
    parameter bindings
  - getWhere
```
public Predicate getWhere()
```
    Description copied from interface: QueryMetadata
    
    Get the expressions aggregated into a single boolean expression or null, if none where defined
    
    Specified by:
    
    getWhere in interface QueryMetadata
    
    Returns:
    
    where condition or null, if none set
  - isDistinct
```
public boolean isDistinct()
```
    Description copied from interface: QueryMetadata
    
    Get whether the projection is distinct
    
    Specified by:
    
    isDistinct in interface QueryMetadata
    
    Returns:
    
    distinct
  - isUnique
```
public boolean isUnique()
```
    Description copied from interface: QueryMetadata
    
    Get whether the projection is unique
    
    Specified by:
    
    isUnique in interface QueryMetadata
    
    Returns:
    
    unique
  - reset
```
public void reset()
```
    Description copied from interface: QueryMetadata
    
    Reset the projection
    
    Specified by:
    
    reset in interface QueryMetadata
  - setDistinct
```
public void setDistinct(boolean distinct)
```
    Description copied from interface: QueryMetadata
    
    Set the distinct flag
    
    Specified by:
    
    setDistinct in interface QueryMetadata
    
    Parameters:
    
    distinct - distinct
  - setLimit
```
public void setLimit(java.lang.Long limit)
```
    Description copied from interface: QueryMetadata
    
    Set the maximum number of rows
    
    Specified by:
    
    setLimit in interface QueryMetadata
    
    Parameters:
    
    limit - limit
  - setModifiers
```
public void setModifiers(QueryModifiers restriction)
```
    Description copied from interface: QueryMetadata
    
    Set the query modifiers limit and offset
    
    Specified by:
    
    setModifiers in interface QueryMetadata
    
    Parameters:
    
    restriction - restriction
  - setOffset
```
public void setOffset(java.lang.Long offset)
```
    Description copied from interface: QueryMetadata
    
    Set the number of skipped rows
    
    Specified by:
    
    setOffset in interface QueryMetadata
    
    Parameters:
    
    offset - offset
  - setUnique
```
public void setUnique(boolean unique)
```
    Description copied from interface: QueryMetadata
    
    Set the unique flag
    
    Specified by:
    
    setUnique in interface QueryMetadata
    
    Parameters:
    
    unique - unique
  - setParam
```
public <T> void setParam(ParamExpression<T> param,
                         T value)
```
    Description copied from interface: QueryMetadata
    
    Bind the value for the given parameter expression
    
    Specified by:
    
    setParam in interface QueryMetadata
    
    Type Parameters:
    
    T - binding type
    
    Parameters:
    
    param - parameter
    
    value - binding
  - addFlag
```
public void addFlag(QueryFlag flag)
```
    Description copied from interface: QueryMetadata
    
    Add the given query flag
    
    Specified by:
    
    addFlag in interface QueryMetadata
    
    Parameters:
    
    flag - query flag
  - hasFlag
```
public boolean hasFlag(QueryFlag flag)
```
    Description copied from interface: QueryMetadata
    
    Return whether the given query flag is applied
    
    Specified by:
    
    hasFlag in interface QueryMetadata
    
    Parameters:
    
    flag - query flag
    
    Returns:
    
    true, if present, false, if not
  - getFlags
```
public java.util.Set<QueryFlag> getFlags()
```
    Description copied from interface: QueryMetadata
    
    Get all query flags
    
    Specified by:
    
    getFlags in interface QueryMetadata
    
    Returns:
    
    all used query flags
  - setValidate
```
public void setValidate(boolean v)
```
    Description copied from interface: QueryMetadata
    
    Set the validate flag
    
    Specified by:
    
    setValidate in interface QueryMetadata
    
    Parameters:
    
    v - validate
  - addJoinFlag
```
public void addJoinFlag(JoinFlag flag)
```
    Description copied from interface: QueryMetadata
    
    Add the given join flag to the last given join
    
    Specified by:
    
    addJoinFlag in interface QueryMetadata
    
    Parameters:
    
    flag - join flag
  - removeFlag
```
public void removeFlag(QueryFlag flag)
```
    Description copied from interface: QueryMetadata
    
    Remove the given query flag
    
    Specified by:
    
    removeFlag in interface QueryMetadata
    
    Parameters:
    
    flag - query flag

Class EmptyMetadata

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT

Constructor Detail

EmptyMetadata

Method Detail

addGroupBy

addHaving

addJoin

addJoinCondition

addOrderBy

setProjection

addWhere

clearOrderBy

clearWhere

clone

getGroupBy

getHaving

getJoins

getModifiers

getOrderBy

getProjection

getParams

getWhere

isDistinct

isUnique

reset

setDistinct

setLimit

setModifiers

setOffset

setUnique

setParam

addFlag

hasFlag

getFlags

setValidate

addJoinFlag

removeFlag