public class EPStatementObjectModel extends Object implements Serializable
Applications can create an object model by instantiating this class and then setting the various clauses. When done, use the administrative interface to deploy from the model.
Use the toEPL method to generate a textual EPL from an object model.
Minimally, and EPL statement consists of the select-clause and the where-clause. These are represented by SelectClause
and FromClause
respectively.
Here is a short example that create a simple EPL statement such as "select page, responseTime from PageLoad" :
EPStatementObjectModel model = new EPStatementObjectModel(); model.setSelectClause(SelectClause.create("page", "responseTime")); model.setPropertyEvalSpec(FromClause.create(FilterStream.create("PageLoad")));
The select-clause and from-clause must be set for the statement object model to be useable by the administrative API. All other clauses a optional.
Please see the documentation set for further examples.
Constructor and Description |
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EPStatementObjectModel()
Ctor.
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Modifier and Type | Method and Description |
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EPStatementObjectModel |
fromClause(FromClause fromClause)
Specify a from-clause.
|
List<AnnotationPart> |
getAnnotations()
Returns annotations.
|
String |
getContextName()
Returns the context name if context dimensions apply to statement.
|
CreateContextClause |
getCreateContext()
Returns the create-context clause.
|
CreateDataFlowClause |
getCreateDataFlow()
Returns the "create dataflow" part, if present.
|
CreateExpressionClause |
getCreateExpression()
Returns the create-expression clause, if any
|
CreateIndexClause |
getCreateIndex()
Returns create-index clause.
|
CreateSchemaClause |
getCreateSchema()
Returns the create-schema clause.
|
CreateTableClause |
getCreateTable()
Returns the create-table clause if present or null if not present
|
CreateVariableClause |
getCreateVariable()
Returns the create-variable clause if this is a statement creating a variable, or null if not.
|
CreateWindowClause |
getCreateWindow()
Returns the create-window clause for creating named windows, or null if this statement does not
create a named window.
|
List<ExpressionDeclaration> |
getExpressionDeclarations()
Returns the expression declarations, if any.
|
FireAndForgetClause |
getFireAndForgetClause()
Returns fire-and-forget (on-demand) query information for FAF select, insert, update and delete.
|
ForClause |
getForClause()
Returns the for-clause.
|
FromClause |
getFromClause()
Return the from-clause.
|
GroupByClause |
getGroupByClause()
Return the group-by-clause, or null to indicate that the clause is absent.
|
Expression |
getHavingClause()
Return the having-clause, or null to indicate that the clause is absent.
|
InsertIntoClause |
getInsertInto()
Return the insert-into-clause, or null to indicate that the clause is absent.
|
IntoTableClause |
getIntoTableClause()
Returns the into-table clause, or null if none found.
|
MatchRecognizeClause |
getMatchRecognizeClause()
Match-recognize clause.
|
OnClause |
getOnExpr()
Returns the on-delete clause for deleting from named windows, or null if this statement
does not delete from a named window
|
OrderByClause |
getOrderByClause()
Return the order-by-clause, or null to indicate that the clause is absent.
|
OutputLimitClause |
getOutputLimitClause()
Return the output-rate-limiting-clause, or null to indicate that the clause is absent.
|
RowLimitClause |
getRowLimitClause()
Returns the row limit specification, or null if none supplied.
|
List<ScriptExpression> |
getScriptExpressions()
Returns the scripts defined.
|
SelectClause |
getSelectClause()
Return the select-clause.
|
String |
getTreeObjectName()
Returns the internal expression id assigned for tools to identify the expression.
|
UpdateClause |
getUpdateClause()
Returns the update specification.
|
Expression |
getWhereClause()
Return the where-clause, or null to indicate that the clause is absent.
|
EPStatementObjectModel |
groupByClause(GroupByClause groupByClause)
Specify a group-by-clause.
|
EPStatementObjectModel |
havingClause(Expression havingClause)
Specify a having-clause.
|
EPStatementObjectModel |
insertInto(InsertIntoClause insertInto)
Specify an insert-into-clause.
|
EPStatementObjectModel |
orderByClause(OrderByClause orderByClause)
Specify an order-by-clause.
|
EPStatementObjectModel |
outputLimitClause(OutputLimitClause outputLimitClause)
Specify an output-rate-limiting-clause.
|
EPStatementObjectModel |
selectClause(SelectClause selectClause)
Specify a select-clause.
|
void |
setAnnotations(List<AnnotationPart> annotations)
Sets annotations.
|
void |
setContextName(String contextName)
Sets the context name if context dimensions apply to statement.
|
void |
setCreateContext(CreateContextClause createContext)
Sets the create-context clause.
|
void |
setCreateDataFlow(CreateDataFlowClause createDataFlow)
Sets the "create dataflow" part,.
|
void |
setCreateExpression(CreateExpressionClause createExpression)
Sets the create-expression clause, if any
|
void |
setCreateIndex(CreateIndexClause createIndex)
Sets create-index clause.
|
void |
setCreateSchema(CreateSchemaClause createSchema)
Sets the create-schema clause.
|
void |
setCreateTable(CreateTableClause createTable)
Sets the create-table clause if present or null if not present
|
void |
setCreateVariable(CreateVariableClause createVariable)
Sets the create-variable clause if this is a statement creating a variable, or null if not.
|
void |
setCreateWindow(CreateWindowClause createWindow)
Sets the create-window clause for creating named windows, or null if this statement does not
create a named window.
|
void |
setExpressionDeclarations(List<ExpressionDeclaration> expressionDeclarations)
Sets the expression declarations, if any.
|
void |
setFireAndForgetClause(FireAndForgetClause fireAndForgetClause)
Sets fire-and-forget (on-demand) query information for FAF select, insert, update and delete.
|
void |
setForClause(ForClause forClause)
Sets the for-clause.
|
void |
setFromClause(FromClause fromClause)
Specify a from-clause.
|
void |
setGroupByClause(GroupByClause groupByClause)
Specify a group-by-clause.
|
void |
setHavingClause(Expression havingClause)
Specify a having-clause.
|
void |
setInsertInto(InsertIntoClause insertInto)
Specify an insert-into-clause.
|
void |
setIntoTableClause(IntoTableClause intoTableClause)
Sets the into-table clause, or null if none found.
|
void |
setMatchRecognizeClause(MatchRecognizeClause clause)
Sets match-recognize clause.
|
void |
setOnExpr(OnClause onExpr)
Sets the on-delete or on-select clause for selecting or deleting from named windows, or null if this statement
does not on-select or on-delete from a named window
|
void |
setOrderByClause(OrderByClause orderByClause)
Specify an order-by-clause.
|
void |
setOutputLimitClause(OutputLimitClause outputLimitClause)
Specify an output-rate-limiting-clause.
|
void |
setRowLimitClause(RowLimitClause rowLimitClause)
Sets the row limit specification, or null if none applicable.
|
void |
setScriptExpressions(List<ScriptExpression> scriptExpressions)
Sets the scripts.
|
void |
setSelectClause(SelectClause selectClause)
Specify a select-clause.
|
void |
setTreeObjectName(String treeObjectName)
Sets an internal expression id assigned for tools to identify the expression.
|
void |
setUpdateClause(UpdateClause updateClause)
Sets the update specification.
|
void |
setWhereClause(Expression whereClause)
Specify a where-clause.
|
String |
toEPL()
Renders the object model in it's EPL syntax textual representation.
|
String |
toEPL(EPStatementFormatter formatter)
Rendering using the provided formatter.
|
void |
toEPL(EPStatementFormatter formatter,
StringWriter writer)
Renders the object model in it's EPL syntax textual representation, using a whitespace-formatter as provided.
|
void |
toEPL(StringWriter writer)
Rendering using the provided writer.
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EPStatementObjectModel |
whereClause(Expression whereClause)
Specify a where-clause.
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public void setInsertInto(InsertIntoClause insertInto)
insertInto
- specifies the insert-into-clause, or null to indicate that the clause is absentpublic EPStatementObjectModel insertInto(InsertIntoClause insertInto)
insertInto
- specifies the insert-into-clause, or null to indicate that the clause is absentpublic InsertIntoClause getInsertInto()
public void setSelectClause(SelectClause selectClause)
selectClause
- specifies the select-clause, the select-clause cannot be null and must be setpublic EPStatementObjectModel selectClause(SelectClause selectClause)
selectClause
- specifies the select-clause, the select-clause cannot be null and must be setpublic SelectClause getSelectClause()
public void setFromClause(FromClause fromClause)
fromClause
- specifies the from-clause, the from-clause cannot be null and must be setpublic EPStatementObjectModel fromClause(FromClause fromClause)
fromClause
- specifies the from-clause, the from-clause cannot be null and must be setpublic Expression getWhereClause()
public void setWhereClause(Expression whereClause)
whereClause
- specifies the where-clause, which is optional and can be nullpublic EPStatementObjectModel whereClause(Expression whereClause)
whereClause
- specifies the where-clause, which is optional and can be nullpublic FromClause getFromClause()
public GroupByClause getGroupByClause()
public void setGroupByClause(GroupByClause groupByClause)
groupByClause
- specifies the group-by-clause, which is optional and can be nullpublic EPStatementObjectModel groupByClause(GroupByClause groupByClause)
groupByClause
- specifies the group-by-clause, which is optional and can be nullpublic Expression getHavingClause()
public void setHavingClause(Expression havingClause)
havingClause
- specifies the having-clause, which is optional and can be nullpublic EPStatementObjectModel havingClause(Expression havingClause)
havingClause
- specifies the having-clause, which is optional and can be nullpublic OrderByClause getOrderByClause()
public void setOrderByClause(OrderByClause orderByClause)
orderByClause
- specifies the order-by-clause, which is optional and can be nullpublic EPStatementObjectModel orderByClause(OrderByClause orderByClause)
orderByClause
- specifies the order-by-clause, which is optional and can be nullpublic OutputLimitClause getOutputLimitClause()
public void setOutputLimitClause(OutputLimitClause outputLimitClause)
outputLimitClause
- specifies the output-rate-limiting-clause, which is optional and can be nullpublic EPStatementObjectModel outputLimitClause(OutputLimitClause outputLimitClause)
outputLimitClause
- specifies the output-rate-limiting-clause, which is optional and can be nullpublic String toEPL()
IllegalStateException
- if required clauses do not existpublic void toEPL(StringWriter writer)
writer
- to usepublic String toEPL(EPStatementFormatter formatter)
formatter
- to usepublic void toEPL(EPStatementFormatter formatter, StringWriter writer)
formatter
- the formatter to usewriter
- writer to useIllegalStateException
- if required clauses do not existpublic CreateWindowClause getCreateWindow()
public void setCreateWindow(CreateWindowClause createWindow)
createWindow
- is the named window creation clausepublic OnClause getOnExpr()
public void setOnExpr(OnClause onExpr)
onExpr
- is the on-expression (on-select and on-delete) clause to setpublic CreateVariableClause getCreateVariable()
public void setCreateVariable(CreateVariableClause createVariable)
createVariable
- create-variable clausepublic RowLimitClause getRowLimitClause()
public void setRowLimitClause(RowLimitClause rowLimitClause)
rowLimitClause
- row limit spec if anypublic UpdateClause getUpdateClause()
public void setUpdateClause(UpdateClause updateClause)
updateClause
- update spec if definedpublic List<AnnotationPart> getAnnotations()
public void setAnnotations(List<AnnotationPart> annotations)
annotations
- to setpublic MatchRecognizeClause getMatchRecognizeClause()
public void setMatchRecognizeClause(MatchRecognizeClause clause)
clause
- to setpublic CreateIndexClause getCreateIndex()
public void setCreateIndex(CreateIndexClause createIndex)
createIndex
- to setpublic CreateSchemaClause getCreateSchema()
public void setCreateSchema(CreateSchemaClause createSchema)
createSchema
- clause to setpublic CreateContextClause getCreateContext()
public void setCreateContext(CreateContextClause createContext)
createContext
- clause to setpublic ForClause getForClause()
public void setForClause(ForClause forClause)
forClause
- for-clausepublic List<ExpressionDeclaration> getExpressionDeclarations()
public void setExpressionDeclarations(List<ExpressionDeclaration> expressionDeclarations)
expressionDeclarations
- expression declarations to setpublic String getContextName()
public void setContextName(String contextName)
contextName
- context namepublic List<ScriptExpression> getScriptExpressions()
public void setScriptExpressions(List<ScriptExpression> scriptExpressions)
scriptExpressions
- to setpublic CreateDataFlowClause getCreateDataFlow()
public void setCreateDataFlow(CreateDataFlowClause createDataFlow)
createDataFlow
- create dataflow clausepublic String getTreeObjectName()
public void setTreeObjectName(String treeObjectName)
treeObjectName
- object namepublic CreateExpressionClause getCreateExpression()
public void setCreateExpression(CreateExpressionClause createExpression)
createExpression
- clausepublic FireAndForgetClause getFireAndForgetClause()
public void setFireAndForgetClause(FireAndForgetClause fireAndForgetClause)
fireAndForgetClause
- fire and forget query informationpublic IntoTableClause getIntoTableClause()
public void setIntoTableClause(IntoTableClause intoTableClause)
intoTableClause
- into-table clausepublic CreateTableClause getCreateTable()
public void setCreateTable(CreateTableClause createTable)
createTable
- create-table clauseCopyright © 2005–2018. All rights reserved.