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## org.apache.cayenne.query
Class EJBQLQuery

    java.lang.Object
      org.apache.cayenne.query.EJBQLQuery

All Implemented Interfaces:
  Serializable, ConfigurationNode, Query, XMLSerializable

    public class EJBQLQuery

extends Object
implements Query, XMLSerializable

An EJBQL query representation in Cayenne.

Since:
  3.0
See Also:
  Serialized Form

Field Summary
`protected DataMap` | `dataMap`
`protected String` | `ejbqlStatement`
`protected EJBQLCompiledExpression` | `expression`
`protected String` | `name`
`protected Map<String,Object>` | `namedParameters`
`protected Map<Integer,Object>` | `positionalParameters`

Constructor Summary
`EJBQLQuery()`
`EJBQLQuery(String ejbqlStatement)`

Method Summary
`
`<T> T`
` | `acceptVisitor(ConfigurationNodeVisitor<T> visitor)`
`SQLAction` | `createSQLAction(SQLActionVisitor visitor)` A callback method invoked by Cayenne during the final execution phase of the query run.
`void` | `encodeAsXML(XMLEncoder encoder)` Prints itself as XML to the provided XMLEncoder.
`String[]` | `getCacheGroups()`
`QueryCacheStrategy` | `getCacheStrategy()`
`DataMap` | `getDataMap()`
`String` | `getEjbqlStatement()` Returns an unparsed EJB QL statement used to initialize this query.
`EJBQLCompiledExpression` | `getExpression(EntityResolver resolver)` Returns lazily initialized EJBQLCompiledExpression for this query EJBQL.
`int` | `getFetchLimit()` Returns the fetchLimit property indicating the maximum number of rows this query would return.
`int` | `getFetchOffset()`
`QueryMetadata` | `getMetaData(EntityResolver resolver)` Returns query runtime parameters.
`String` | `getName()` Returns a symbolic name of the query.
`Map<String,Object>` | `getNamedParameters()` Returns unmodifiable map of combined named and positional parameters.
`int` | `getPageSize()`
`Map<Integer,Object>` | `getPositionalParameters()`
`int` | `getStatementFetchSize()`
`void` | `initWithProperties(Map<String,?> properties)`
`boolean` | `isFetchingDataRows()`
`void` | `route(QueryRouter router, EntityResolver resolver, Query substitutedQuery)` A callback method invoked by Cayenne during the routing phase of the query execution.
`void` | `setCacheGroups(String... cacheGroups)`
`void` | `setCacheStrategy(QueryCacheStrategy strategy)`
`void` | `setDataMap(DataMap dataMap)`
`void` | `setEjbqlStatement(String text)`
`void` | `setFetchingDataRows(boolean flag)`
`void` | `setFetchLimit(int fetchLimit)` Sets the fetchLimit property indicating the maximum number of rows this query would return.
`void` | `setFetchOffset(int fetchOffset)`
`void` | `setName(String name)`
`void` | `setPageSize(int pageSize)`
`void` | `setParameter(int position, Object object)` Sets a positional query parameter value.
`void` | `setParameter(String name, Object object)` Sets a named query parameter value.
`void` | `setStatementFetchSize(int size)` Sets statement's fetch size (0 for no default size)

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

Field Detail

### name

    protected String name

### dataMap

    protected DataMap dataMap

### ejbqlStatement

    protected String ejbqlStatement

### namedParameters

    protected Map<String,Object> namedParameters

### positionalParameters

    protected Map<Integer,Object> positionalParameters

### expression

    protected transient EJBQLCompiledExpression expression

Constructor Detail

### EJBQLQuery

    public EJBQLQuery(String ejbqlStatement)

### EJBQLQuery

    public EJBQLQuery()

Method Detail

### getDataMap

    public DataMap getDataMap()

  Specified by:
    `getDataMap` in interface `Query`
  Since:
    3.1

### setDataMap

    public void setDataMap(DataMap dataMap)

  Since:
    3.1

### acceptVisitor

    public <T> T acceptVisitor(ConfigurationNodeVisitor<T> visitor)

  Specified by:
    `acceptVisitor` in interface `ConfigurationNode`

### initWithProperties

    public void initWithProperties(Map<String,?> properties)

### getMetaData

    public QueryMetadata getMetaData(EntityResolver resolver)

  Description copied from interface: `Query`
  Returns query runtime parameters. The method is called at various stages of the execution by Cayenne access stack to retrieve query parameters. EntityResolver instance is passed to this method, meaning that the query doesn't need to store direct references to Cayenne mapping objects and can resolve them at runtime.

  Specified by:
    `getMetaData` in interface `Query`

### isFetchingDataRows

    public boolean isFetchingDataRows()

### setFetchingDataRows

    public void setFetchingDataRows(boolean flag)

### getCacheGroups

    public String[] getCacheGroups()

### getCacheStrategy

    public QueryCacheStrategy getCacheStrategy()

### setCacheGroups

    public void setCacheGroups(String... cacheGroups)

### setCacheStrategy

    public void setCacheStrategy(QueryCacheStrategy strategy)

### route

    public void route(QueryRouter router,
                      EntityResolver resolver,
                      Query substitutedQuery)

  Description copied from interface: `Query`
  A callback method invoked by Cayenne during the routing phase of the query execution. Mapping of DataNodes is provided by QueryRouter. Query should use a `QueryRouter.route(QueryEngine, Query, Query)` callback method to route itself. Query can create one or more substitute queries or even provide its own QueryEngine to execute itself.

  Specified by:
    `route` in interface `Query`

### createSQLAction

    public SQLAction createSQLAction(SQLActionVisitor visitor)

  Description copied from interface: `Query`
  A callback method invoked by Cayenne during the final execution phase of the query run. A concrete query implementation is given a chance to decide how it should be handled. Implementors can pick an appropriate method of the SQLActionVisitor to handle itself, create a custom SQLAction of its own, or substitute itself with another query that should be used for SQLAction construction.

  Specified by:
    `createSQLAction` in interface `Query`

### getEjbqlStatement

    public String getEjbqlStatement()

  Returns an unparsed EJB QL statement used to initialize this query.

### getExpression

    public EJBQLCompiledExpression getExpression(EntityResolver resolver)
                                          throws EJBQLException

  Returns lazily initialized EJBQLCompiledExpression for this query EJBQL.

  Throws:
    `EJBQLException`

### getName

    public String getName()

  Description copied from interface: `Query`
  Returns a symbolic name of the query. The name may be used as a key to find queries stored in the DataMap. Some query implementors reuse the name as a QueryMetadata cache key. Generally the name can be null.

  Specified by:
    `getName` in interface `Query`

### setName

    public void setName(String name)

### getNamedParameters

    public Map<String,Object> getNamedParameters()

  Returns unmodifiable map of combined named and positional parameters. Positional parameter keys are Integers, while named parameter keys are strings.

### getPositionalParameters

    public Map<Integer,Object> getPositionalParameters()

### setParameter

    public void setParameter(String name,
                             Object object)

  Sets a named query parameter value.

### setParameter

    public void setParameter(int position,
                             Object object)

  Sets a positional query parameter value. Note that parameter indexes are starting from 1.

### getFetchLimit

    public int getFetchLimit()

  Returns the fetchLimit property indicating the maximum number of rows this query would return.

### setFetchLimit

    public void setFetchLimit(int fetchLimit)

  Sets the fetchLimit property indicating the maximum number of rows this query would return.

### getFetchOffset

    public int getFetchOffset()

### setFetchOffset

    public void setFetchOffset(int fetchOffset)

### encodeAsXML

    public void encodeAsXML(XMLEncoder encoder)

  Description copied from interface: `XMLSerializable`
  Prints itself as XML to the provided XMLEncoder.

  Specified by:
    `encodeAsXML` in interface `XMLSerializable`

### setEjbqlStatement

    public void setEjbqlStatement(String text)

### getPageSize

    public int getPageSize()

### setPageSize

    public void setPageSize(int pageSize)

### setStatementFetchSize

    public void setStatementFetchSize(int size)

  Sets statement's fetch size (0 for no default size)

  Since:
    3.0

### getStatementFetchSize

    public int getStatementFetchSize()

  Returns:
    statement's fetch size
  Since:
    3.0

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