DataCursor (d4core 5.5.4-SNAPSHOT API)

```
public interface DataCursor
```
For data access, we adopt a cursor model. This comes from database technology where a cursor object is used to walk over the results of a database query. Here the cursor walks the underlying data and stores enough state to extract data depending on its sort. The cursor may (or may not) contain internal subclasses to track various kinds of state.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class DataCursor.Scheme

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`fieldIndex(String name)`
`DataCursor`	`getContainer()`
`DSP`	`getDSP()`
`Index`	`getIndex()`
`long`	`getRecordCount()`
`long`	`getRecordIndex()`
`DataCursor.Scheme`	`getScheme()`
`DapNode`	`getTemplate()`
`boolean`	`isField()`
`boolean`	`isScalar()`
`Object`	`read(Index index)`
`Object`	`read(List<Slice> slices)`
`DataCursor`	`readField(int fieldindex)`
`DataCursor`	`readRecord(long i)`

Method Detail

getScheme
```
DataCursor.Scheme getScheme()
```

getDSP
```
DSP getDSP()
```

getTemplate
```
DapNode getTemplate()
```

getIndex

Index getIndex()
        throws DapException

Throws:: DapException

isScalar
```
boolean isScalar()
```

isField
```
boolean isField()
```

getContainer
```
DataCursor getContainer()
```

read

Object read(List<Slice> slices)
     throws DapException

Throws:: DapException

read

Object read(Index index)
     throws DapException

Throws:: DapException

getRecordCount

long getRecordCount()
             throws DapException

Throws:: DapException

readRecord

DataCursor readRecord(long i)
               throws DapException

Throws:: DapException

getRecordIndex

long getRecordIndex()
             throws DapException

Throws:: DapException

fieldIndex

int fieldIndex(String name)
        throws DapException

Throws:: DapException

readField

DataCursor readField(int fieldindex)
              throws DapException

Throws:: DapException