HCatELFunctions (Apache Oozie Core 4.2.0 API)

java.lang.Object
- org.apache.oozie.coord.HCatELFunctions

```
public class HCatELFunctions
extends Object
```
This class implements the EL function for HCat datasets in coordinator

Constructor Summary

Constructors
Constructor and Description

HCatELFunctions()

Constructors
Constructor and Description
`HCatELFunctions()`

Method Summary

Methods
Modifier and Type	Method and Description
`static boolean`	`hcat_exists(String uri)` Return true if partitions exists or false if not.
`static String`	`ph1_coord_databaseIn_echo(String dataName)` Echo the same EL function without evaluating anything
`static String`	`ph1_coord_databaseOut_echo(String dataName)`
`static String`	`ph1_coord_dataInPartitionFilter_echo(String dataInName, String type)`
`static String`	`ph1_coord_dataInPartitionMax_echo(String dataInName, String partition)`
`static String`	`ph1_coord_dataInPartitionMin_echo(String dataInName, String partition)`
`static String`	`ph1_coord_dataInPartitions_echo(String dataInName, String type)`
`static String`	`ph1_coord_dataOutPartitions_echo(String dataOutName)`
`static String`	`ph1_coord_dataOutPartitionValue_echo(String dataOutName, String partition)`
`static String`	`ph1_coord_tableIn_echo(String dataName)`
`static String`	`ph1_coord_tableOut_echo(String dataName)`
`static String`	`ph3_coord_databaseIn(String dataName)` Extract the hcat DB name from the URI-template associate with 'dataInName'.
`static String`	`ph3_coord_databaseOut(String dataName)` Extract the hcat DB name from the URI-template associate with 'dataOutName'.
`static String`	`ph3_coord_dataInPartitionFilter(String dataInName, String type)` Used to specify the HCat partition filter which is input dependency for workflow job. Look for two evaluator-level variables A) .datain. B) .datain..unresolved A defines the current list of HCat URIs.
`static String`	`ph3_coord_dataInPartitionMax(String dataInName, String partitionName)` Used to specify the MINIMUM value of an HCat partition which is input dependency for workflow job. Look for two evaluator-level variables A) .datain. B) .datain..unresolved A defines the current list of HCat URIs.
`static String`	`ph3_coord_dataInPartitionMin(String dataInName, String partitionName)` Used to specify the MAXIMUM value of an HCat partition which is input dependency for workflow job. Look for two evaluator-level variables A) .datain. B) .datain..unresolved A defines the current list of HCat URIs.
`static String`	`ph3_coord_dataInPartitions(String dataInName, String type)` Used to specify the entire HCat partition defining input for workflow job.
`static String`	`ph3_coord_dataOutPartitions(String dataOutName)` Used to specify the entire HCat partition defining output for workflow job. Look for two evaluator-level variables A) .dataout. B) .dataout..unresolved A defines the data-out HCat URI.
`static String`	`ph3_coord_dataOutPartitionValue(String dataOutName, String partitionName)` Used to specify the HCat partition's value defining output for workflow job. Look for two evaluator-level variables A) .dataout. B) .dataout..unresolved A defines the current list of HCat URIs.
`static String`	`ph3_coord_tableIn(String dataName)` Extract the hcat Table name from the URI-template associate with 'dataInName'.
`static String`	`ph3_coord_tableOut(String dataName)` Extract the hcat Table name from the URI-template associate with 'dataOutName'.

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

- Constructor Detail
  - HCatELFunctions
```
public HCatELFunctions()
```
- Method Detail
  - hcat_exists
```
public static boolean hcat_exists(String uri)
                           throws Exception
```
    Return true if partitions exists or false if not.
    
    Parameters:
    uri - hcatalog partition uri.
    
    Returns:
    true if the uri exists, false if it does not.
    
    Throws:
    
    Exception
  - ph1_coord_databaseIn_echo
```
public static String ph1_coord_databaseIn_echo(String dataName)
```
    Echo the same EL function without evaluating anything
    
    Parameters:
    dataInName -
    
    Returns:
    the same EL function
  - ph1_coord_databaseOut_echo
```
public static String ph1_coord_databaseOut_echo(String dataName)
```
  - ph1_coord_tableIn_echo
```
public static String ph1_coord_tableIn_echo(String dataName)
```
  - ph1_coord_tableOut_echo
```
public static String ph1_coord_tableOut_echo(String dataName)
```
  - ph1_coord_dataInPartitionFilter_echo
```
public static String ph1_coord_dataInPartitionFilter_echo(String dataInName,
                                          String type)
```
  - ph1_coord_dataInPartitionMin_echo
```
public static String ph1_coord_dataInPartitionMin_echo(String dataInName,
                                       String partition)
```
  - ph1_coord_dataInPartitionMax_echo
```
public static String ph1_coord_dataInPartitionMax_echo(String dataInName,
                                       String partition)
```
  - ph1_coord_dataOutPartitions_echo
```
public static String ph1_coord_dataOutPartitions_echo(String dataOutName)
```
  - ph1_coord_dataInPartitions_echo
```
public static String ph1_coord_dataInPartitions_echo(String dataInName,
                                     String type)
```
  - ph1_coord_dataOutPartitionValue_echo
```
public static String ph1_coord_dataOutPartitionValue_echo(String dataOutName,
                                          String partition)
```
  - ph3_coord_databaseIn
```
public static String ph3_coord_databaseIn(String dataName)
```
    Extract the hcat DB name from the URI-template associate with 'dataInName'. Caller needs to specify the EL-evaluator level variable 'oozie.coord.el.dataset.bean' with synchronous dataset object (SyncCoordDataset)
    
    Parameters:
    dataInName -
    
    Returns:
    DB name
  - ph3_coord_databaseOut
```
public static String ph3_coord_databaseOut(String dataName)
```
    Extract the hcat DB name from the URI-template associate with 'dataOutName'. Caller needs to specify the EL-evaluator level variable 'oozie.coord.el.dataset.bean' with synchronous dataset object (SyncCoordDataset)
    
    Parameters:
    dataOutName -
    
    Returns:
    DB name
  - ph3_coord_tableIn
```
public static String ph3_coord_tableIn(String dataName)
```
    Extract the hcat Table name from the URI-template associate with 'dataInName'. Caller needs to specify the EL-evaluator level variable 'oozie.coord.el.dataset.bean' with synchronous dataset object (SyncCoordDataset)
    
    Parameters:
    dataInName -
    
    Returns:
    Table name
  - ph3_coord_tableOut
```
public static String ph3_coord_tableOut(String dataName)
```
    Extract the hcat Table name from the URI-template associate with 'dataOutName'. Caller needs to specify the EL-evaluator level variable 'oozie.coord.el.dataset.bean' with synchronous dataset object (SyncCoordDataset)
    
    Parameters:
    dataOutName -
    
    Returns:
    Table name
  - ph3_coord_dataInPartitionFilter
```
public static String ph3_coord_dataInPartitionFilter(String dataInName,
                                     String type)
```
    Used to specify the HCat partition filter which is input dependency for workflow job.
    Look for two evaluator-level variables
    A) .datain. B) .datain..unresolved
    A defines the current list of HCat URIs.
    B defines whether there are any unresolved EL-function (i.e latest)
    If there are something unresolved, this function will echo back the original function
    otherwise it sends the partition filter.
    
    Parameters:
    dataInName - : Datain name
    type - : for action type - pig, MR or hive
  - ph3_coord_dataOutPartitionValue
```
public static String ph3_coord_dataOutPartitionValue(String dataOutName,
                                     String partitionName)
```
    Used to specify the HCat partition's value defining output for workflow job.
    Look for two evaluator-level variables
    A) .dataout. B) .dataout..unresolved
    A defines the current list of HCat URIs.
    B defines whether there are any unresolved EL-function (i.e latest)
    If there are something unresolved, this function will echo back the original function
    otherwise it sends the partition value.
    
    Parameters:
    dataOutName - : Dataout name
    partitionName - : Specific partition name whose value is wanted
  - ph3_coord_dataOutPartitions
```
public static String ph3_coord_dataOutPartitions(String dataOutName)
```
    Used to specify the entire HCat partition defining output for workflow job.
    Look for two evaluator-level variables
    A) .dataout. B) .dataout..unresolved
    A defines the data-out HCat URI.
    B defines whether there are any unresolved EL-function (i.e latest)
    If there are something unresolved, this function will echo back the original function
    otherwise it sends the partition.
    
    Parameters:
    dataOutName - : DataOut name
  - ph3_coord_dataInPartitions
```
public static String ph3_coord_dataInPartitions(String dataInName,
                                String type)
```
    Used to specify the entire HCat partition defining input for workflow job.
    Look for two evaluator-level variables
    A) .datain. B) .datain..unresolved
    A defines the data-in HCat URI.
    B defines whether there are any unresolved EL-function (i.e latest)
    If there are something unresolved, this function will echo back the original function
    otherwise it sends the partition.
    
    Parameters:
    dataInName - : DataIn name
    type - : for action type: hive-export
  - ph3_coord_dataInPartitionMin
```
public static String ph3_coord_dataInPartitionMin(String dataInName,
                                  String partitionName)
```
    Used to specify the MAXIMUM value of an HCat partition which is input dependency for workflow job.
    Look for two evaluator-level variables
    A) .datain. B) .datain..unresolved
    A defines the current list of HCat URIs.
    B defines whether there are any unresolved EL-function (i.e latest)
    If there are something unresolved, this function will echo back the original function
    otherwise it sends the max partition value.
    
    Parameters:
    dataInName - : Datain name
    partitionName - : Specific partition name whose MAX value is wanted
  - ph3_coord_dataInPartitionMax
```
public static String ph3_coord_dataInPartitionMax(String dataInName,
                                  String partitionName)
```
    Used to specify the MINIMUM value of an HCat partition which is input dependency for workflow job.
    Look for two evaluator-level variables
    A) .datain. B) .datain..unresolved
    A defines the current list of HCat URIs.
    B defines whether there are any unresolved EL-function (i.e latest)
    If there are something unresolved, this function will echo back the original function
    otherwise it sends the min partition value.
    
    Parameters:
    dataInName - : Datain name
    partitionName - : Specific partition name whose MIN value is wanted

Class HCatELFunctions

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

HCatELFunctions

Method Detail

hcat_exists

ph1_coord_databaseIn_echo

ph1_coord_databaseOut_echo

ph1_coord_tableIn_echo

ph1_coord_tableOut_echo

ph1_coord_dataInPartitionFilter_echo

ph1_coord_dataInPartitionMin_echo

ph1_coord_dataInPartitionMax_echo

ph1_coord_dataOutPartitions_echo

ph1_coord_dataInPartitions_echo

ph1_coord_dataOutPartitionValue_echo

ph3_coord_databaseIn

ph3_coord_databaseOut

ph3_coord_tableIn

ph3_coord_tableOut

ph3_coord_dataInPartitionFilter

ph3_coord_dataOutPartitionValue

ph3_coord_dataOutPartitions

ph3_coord_dataInPartitions

ph3_coord_dataInPartitionMin

ph3_coord_dataInPartitionMax