AbstractStructReader (Google Cloud Spanner 1.49.0 API)

java.lang.Object
- com.google.cloud.spanner.AbstractStructReader

All Implemented Interfaces:

StructReader

Direct Known Subclasses:

Struct
```
public abstract class AbstractStructReader
extends Object
implements StructReader
```
Base class for assisting StructReader implementations.
This class implements the majority of the StructReader interface, leaving subclasses to implement core data access via the getTypeNameInternal() methods. AbstractStructReader guarantees that these will only be called for non-NULL columns of a type appropriate for the method.

Constructor Summary

Constructors
Constructor and Description

AbstractStructReader()

Constructors
Constructor and Description
`AbstractStructReader()`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`protected void`	`checkNonNull(int columnIndex, Object columnNameForError)`
`boolean`	`getBoolean(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.bool()`.
`boolean`	`getBoolean(String columnName)` Returns the value of a non-`NULL` column with type `Type.bool()`.
`boolean[]`	`getBooleanArray(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.bool())`.
`boolean[]`	`getBooleanArray(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.bool())`.
`protected abstract boolean[]`	`getBooleanArrayInternal(int columnIndex)`
`protected abstract boolean`	`getBooleanInternal(int columnIndex)`
`List<Boolean>`	`getBooleanList(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.bool())`.
`List<Boolean>`	`getBooleanList(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.bool())`.
`protected abstract List<Boolean>`	`getBooleanListInternal(int columnIndex)`
`com.google.cloud.ByteArray`	`getBytes(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.bytes()`.
`com.google.cloud.ByteArray`	`getBytes(String columnName)` Returns the value of a non-`NULL` column with type `Type.bytes()`.
`protected abstract com.google.cloud.ByteArray`	`getBytesInternal(int columnIndex)`
`List<com.google.cloud.ByteArray>`	`getBytesList(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.bytes())`.
`List<com.google.cloud.ByteArray>`	`getBytesList(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.bytes())`.
`protected abstract List<com.google.cloud.ByteArray>`	`getBytesListInternal(int columnIndex)`
`int`	`getColumnCount()` Returns the number of columns in the underlying data.
`int`	`getColumnIndex(String columnName)` Returns the index of the column named `columnName`.
`Type`	`getColumnType(int columnIndex)` Returns the type of a column.
`Type`	`getColumnType(String columnName)` Returns the type of a column.
`com.google.cloud.Date`	`getDate(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.date()`.
`com.google.cloud.Date`	`getDate(String columnName)` Returns the value of a non-`NULL` column with type `Type.date()`.
`protected abstract com.google.cloud.Date`	`getDateInternal(int columnIndex)`
`List<com.google.cloud.Date>`	`getDateList(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.date())`.
`List<com.google.cloud.Date>`	`getDateList(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.date())`.
`protected abstract List<com.google.cloud.Date>`	`getDateListInternal(int columnIndex)`
`double`	`getDouble(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.float64()`.
`double`	`getDouble(String columnName)` Returns the value of a non-`NULL` column with type `Type.float64()`.
`double[]`	`getDoubleArray(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.float64())`.
`double[]`	`getDoubleArray(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.float64())`.
`protected abstract double[]`	`getDoubleArrayInternal(int columnIndex)`
`protected abstract double`	`getDoubleInternal(int columnIndex)`
`List<Double>`	`getDoubleList(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.float64())`.
`List<Double>`	`getDoubleList(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.float64())`.
`protected abstract List<Double>`	`getDoubleListInternal(int columnIndex)`
`long`	`getLong(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.int64()`.
`long`	`getLong(String columnName)` Returns the value of a non-`NULL` column with type `Type.int64()`.
`long[]`	`getLongArray(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.int64())`.
`long[]`	`getLongArray(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.int64())`.
`protected abstract long[]`	`getLongArrayInternal(int columnIndex)`
`protected abstract long`	`getLongInternal(int columnIndex)`
`List<Long>`	`getLongList(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.int64())`.
`List<Long>`	`getLongList(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.int64())`.
`protected abstract List<Long>`	`getLongListInternal(int columnIndex)`
`String`	`getString(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.string()`.
`String`	`getString(String columnName)` Returns the value of a non-`NULL` column with type `Type.string()`.
`protected abstract String`	`getStringInternal(int columnIndex)`
`List<String>`	`getStringList(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.string())`.
`List<String>`	`getStringList(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.string())`.
`protected abstract List<String>`	`getStringListInternal(int columnIndex)`
`List<Struct>`	`getStructList(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.struct(...))`.
`List<Struct>`	`getStructList(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.struct(...))`.
`protected abstract List<Struct>`	`getStructListInternal(int columnIndex)`
`com.google.cloud.Timestamp`	`getTimestamp(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.timestamp()`.
`com.google.cloud.Timestamp`	`getTimestamp(String columnName)` Returns the value of a non-`NULL` column with type `Type.timestamp()`.
`protected abstract com.google.cloud.Timestamp`	`getTimestampInternal(int columnIndex)`
`List<com.google.cloud.Timestamp>`	`getTimestampList(int columnIndex)` Returns the value of a non-`NULL` column with type `Type.array(Type.timestamp())`.
`List<com.google.cloud.Timestamp>`	`getTimestampList(String columnName)` Returns the value of a non-`NULL` column with type `Type.array(Type.timestamp())`.
`protected abstract List<com.google.cloud.Timestamp>`	`getTimestampListInternal(int columnIndex)`
`boolean`	`isNull(String columnName)` Returns `true` if a column contains a `NULL` value.

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

Methods inherited from interface com.google.cloud.spanner.StructReader
getType, isNull

- Constructor Detail
  - AbstractStructReader
```
public AbstractStructReader()
```
- Method Detail
  - getBooleanInternal
```
protected abstract boolean getBooleanInternal(int columnIndex)
```
  - getLongInternal
```
protected abstract long getLongInternal(int columnIndex)
```
  - getDoubleInternal
```
protected abstract double getDoubleInternal(int columnIndex)
```
  - getStringInternal
```
protected abstract String getStringInternal(int columnIndex)
```
  - getBytesInternal
```
protected abstract com.google.cloud.ByteArray getBytesInternal(int columnIndex)
```
  - getTimestampInternal
```
protected abstract com.google.cloud.Timestamp getTimestampInternal(int columnIndex)
```
  - getDateInternal
```
protected abstract com.google.cloud.Date getDateInternal(int columnIndex)
```
  - getBooleanArrayInternal
```
protected abstract boolean[] getBooleanArrayInternal(int columnIndex)
```
  - getBooleanListInternal
```
protected abstract List<Boolean> getBooleanListInternal(int columnIndex)
```
  - getLongArrayInternal
```
protected abstract long[] getLongArrayInternal(int columnIndex)
```
  - getLongListInternal
```
protected abstract List<Long> getLongListInternal(int columnIndex)
```
  - getDoubleArrayInternal
```
protected abstract double[] getDoubleArrayInternal(int columnIndex)
```
  - getDoubleListInternal
```
protected abstract List<Double> getDoubleListInternal(int columnIndex)
```
  - getStringListInternal
```
protected abstract List<String> getStringListInternal(int columnIndex)
```
  - getBytesListInternal
```
protected abstract List<com.google.cloud.ByteArray> getBytesListInternal(int columnIndex)
```
  - getTimestampListInternal
```
protected abstract List<com.google.cloud.Timestamp> getTimestampListInternal(int columnIndex)
```
  - getDateListInternal
```
protected abstract List<com.google.cloud.Date> getDateListInternal(int columnIndex)
```
  - getStructListInternal
```
protected abstract List<Struct> getStructListInternal(int columnIndex)
```
  - getColumnCount
```
public int getColumnCount()
```
    Description copied from interface: StructReader
    
    Returns the number of columns in the underlying data. This includes any columns with NULL values.
    
    Specified by:
    
    getColumnCount in interface StructReader
  - getColumnType
```
public Type getColumnType(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the type of a column.
    
    Specified by:
    
    getColumnType in interface StructReader
  - getColumnType
```
public Type getColumnType(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the type of a column.
    
    Specified by:
    
    getColumnType in interface StructReader
  - isNull
```
public boolean isNull(String columnName)
```
    Description copied from interface: StructReader
    
    Returns true if a column contains a NULL value.
    
    Specified by:
    
    isNull in interface StructReader
  - getBoolean
```
public boolean getBoolean(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.bool().
    
    Specified by:
    
    getBoolean in interface StructReader
  - getBoolean
```
public boolean getBoolean(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.bool().
    
    Specified by:
    
    getBoolean in interface StructReader
  - getLong
```
public long getLong(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.int64().
    
    Specified by:
    
    getLong in interface StructReader
  - getLong
```
public long getLong(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.int64().
    
    Specified by:
    
    getLong in interface StructReader
  - getDouble
```
public double getDouble(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.float64().
    
    Specified by:
    
    getDouble in interface StructReader
  - getDouble
```
public double getDouble(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.float64().
    
    Specified by:
    
    getDouble in interface StructReader
  - getString
```
public String getString(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.string().
    
    Specified by:
    
    getString in interface StructReader
  - getString
```
public String getString(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.string().
    
    Specified by:
    
    getString in interface StructReader
  - getBytes
```
public com.google.cloud.ByteArray getBytes(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.bytes().
    
    Specified by:
    
    getBytes in interface StructReader
  - getBytes
```
public com.google.cloud.ByteArray getBytes(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.bytes().
    
    Specified by:
    
    getBytes in interface StructReader
  - getTimestamp
```
public com.google.cloud.Timestamp getTimestamp(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.timestamp().
    
    Specified by:
    
    getTimestamp in interface StructReader
  - getTimestamp
```
public com.google.cloud.Timestamp getTimestamp(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.timestamp().
    
    Specified by:
    
    getTimestamp in interface StructReader
  - getDate
```
public com.google.cloud.Date getDate(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.date().
    
    Specified by:
    
    getDate in interface StructReader
  - getDate
```
public com.google.cloud.Date getDate(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.date().
    
    Specified by:
    
    getDate in interface StructReader
  - getBooleanArray
```
public boolean[] getBooleanArray(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.bool()).
    
    Specified by:
    
    getBooleanArray in interface StructReader
  - getBooleanArray
```
public boolean[] getBooleanArray(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.bool()).
    
    Specified by:
    
    getBooleanArray in interface StructReader
  - getBooleanList
```
public List<Boolean> getBooleanList(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.bool()).
    
    Specified by:
    
    getBooleanList in interface StructReader
  - getBooleanList
```
public List<Boolean> getBooleanList(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.bool()).
    
    Specified by:
    
    getBooleanList in interface StructReader
  - getLongArray
```
public long[] getLongArray(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.int64()).
    
    Specified by:
    
    getLongArray in interface StructReader
  - getLongArray
```
public long[] getLongArray(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.int64()).
    
    Specified by:
    
    getLongArray in interface StructReader
  - getLongList
```
public List<Long> getLongList(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.int64()).
    
    Specified by:
    
    getLongList in interface StructReader
  - getLongList
```
public List<Long> getLongList(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.int64()).
    
    Specified by:
    
    getLongList in interface StructReader
  - getDoubleArray
```
public double[] getDoubleArray(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.float64()).
    
    Specified by:
    
    getDoubleArray in interface StructReader
  - getDoubleArray
```
public double[] getDoubleArray(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.float64()).
    
    Specified by:
    
    getDoubleArray in interface StructReader
  - getDoubleList
```
public List<Double> getDoubleList(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.float64()).
    
    Specified by:
    
    getDoubleList in interface StructReader
  - getDoubleList
```
public List<Double> getDoubleList(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.float64()).
    
    Specified by:
    
    getDoubleList in interface StructReader
  - getStringList
```
public List<String> getStringList(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.string()).
    
    Specified by:
    
    getStringList in interface StructReader
  - getStringList
```
public List<String> getStringList(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.string()).
    
    Specified by:
    
    getStringList in interface StructReader
  - getBytesList
```
public List<com.google.cloud.ByteArray> getBytesList(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.bytes()).
    
    Specified by:
    
    getBytesList in interface StructReader
  - getBytesList
```
public List<com.google.cloud.ByteArray> getBytesList(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.bytes()).
    
    Specified by:
    
    getBytesList in interface StructReader
  - getTimestampList
```
public List<com.google.cloud.Timestamp> getTimestampList(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.timestamp()).
    
    Specified by:
    
    getTimestampList in interface StructReader
  - getTimestampList
```
public List<com.google.cloud.Timestamp> getTimestampList(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.timestamp()).
    
    Specified by:
    
    getTimestampList in interface StructReader
  - getDateList
```
public List<com.google.cloud.Date> getDateList(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.date()).
    
    Specified by:
    
    getDateList in interface StructReader
  - getDateList
```
public List<com.google.cloud.Date> getDateList(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.date()).
    
    Specified by:
    
    getDateList in interface StructReader
  - getStructList
```
public List<Struct> getStructList(int columnIndex)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.struct(...)).
    
    Specified by:
    
    getStructList in interface StructReader
  - getStructList
```
public List<Struct> getStructList(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the value of a non-NULL column with type Type.array(Type.struct(...)).
    
    Specified by:
    
    getStructList in interface StructReader
  - getColumnIndex
```
public int getColumnIndex(String columnName)
```
    Description copied from interface: StructReader
    
    Returns the index of the column named columnName.
    
    Specified by:
    
    getColumnIndex in interface StructReader
  - checkNonNull
```
protected void checkNonNull(int columnIndex,
                            Object columnNameForError)
```

Class AbstractStructReader

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.cloud.spanner.StructReader

Constructor Detail

AbstractStructReader

Method Detail

getBooleanInternal

getLongInternal

getDoubleInternal

getStringInternal

getBytesInternal

getTimestampInternal

getDateInternal

getBooleanArrayInternal

getBooleanListInternal

getLongArrayInternal

getLongListInternal

getDoubleArrayInternal

getDoubleListInternal

getStringListInternal

getBytesListInternal

getTimestampListInternal

getDateListInternal

getStructListInternal

getColumnCount

getColumnType

getColumnType

isNull

getBoolean

getBoolean

getLong

getLong

getDouble

getDouble

getString

getString

getBytes

getBytes

getTimestamp

getTimestamp

getDate

getDate

getBooleanArray

getBooleanArray

getBooleanList

getBooleanList

getLongArray

getLongArray

getLongList

getLongList

getDoubleArray

getDoubleArray

getDoubleList

getDoubleList

getStringList

getStringList

getBytesList

getBytesList

getTimestampList

getTimestampList

getDateList

getDateList

getStructList

getStructList

getColumnIndex

checkNonNull