JCoMetaData (SAP HANA Cloud Platform SDK)

All Superinterfaces:

Cloneable, Serializable

All Known Subinterfaces:

JCoClassMetaData, JCoListMetaData, JCoRecordMetaData
```
public interface JCoMetaData
extends Serializable, Cloneable
```
Encapsulates the metadata of JCo data containers. Each element of metadata describes a field of these data containers in terms of name, type, length, etc. JCoMetadata is the basis for the two important metadata interfaces of JCo, and includes their common functionality: JCoListMetaData and JCoRecordMetaData.
Moreover, it contains constants for all supported data types, where each JCo data type corresponds to one of the builtin types of ABAP.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`TYPE_ABAPOBJECT` ABAP object.
`static int`	`TYPE_BCD` Packed BCD number, any length between 1 and 16 bytes.
`static int`	`TYPE_BOX` ABAP boxed component.
`static int`	`TYPE_BYTE` Raw data, binary, fixed length, zero padded.
`static int`	`TYPE_CDAY` Date representing a month and a day of the month without specifying a year, corresponds to ABAP type 'c'.
`static int`	`TYPE_CHAR` 1-byte or multi-byte character.Fixed sized, blank padded.
`static int`	`TYPE_DATE` Date ( YYYYYMMDD ).
`static int`	`TYPE_DECF16` decimal floating point.
`static int`	`TYPE_DECF34` decimal floating point.
`static int`	`TYPE_DTDAY` Date representing year, month, and day, corresponds to ABAP type 'd'.
`static int`	`TYPE_DTMONTH` Date representing a year and a month, corresponds to ABAP type 'x'.
`static int`	`TYPE_DTWEEK` Date representing a year and a week of the year, corresponds to ABAP type '7'.
`static int`	`TYPE_EXCEPTION` ABAP exception.
`static int`	`TYPE_FLOAT` Floating point,double precision.
`static int`	`TYPE_GENERIC_BOX` ABAP boxed generic component.
`static int`	`TYPE_INT` 4-byte integer .
`static int`	`TYPE_INT1` 1-byte integer .
`static int`	`TYPE_INT2` 2-byte integer .
`static int`	`TYPE_INT8` Eight-byte integer, corresponds to ABAP type '8'.
`static int`	`TYPE_INVALID` The field info does not contain a valid JCO type.
`static int`	`TYPE_ITAB` Internal table.
`static int`	`TYPE_NUM` Digits, fixed size,'0' padded.
`static int`	`TYPE_STRING` UTF8 encoded string of variable length.
`static int`	`TYPE_STRUCTURE` A heterogeneous structure.
`static int`	`TYPE_TABLE` A JCoTable.
`static int`	`TYPE_TIME` Time (HHMMSS).
`static int`	`TYPE_TMINUTE` Time representing hours and minutes, corresponds to ABAP type 'i'.
`static int`	`TYPE_TSECOND` Time representing hours, minutes, and seconds, corresponds to ABAP type 't'.
`static int`	`TYPE_UTCLONG` Timestamp with high precision, i.e., date and time including fractions of a second, corresponds to ABAP type 'p'.
`static int`	`TYPE_UTCMINUTE` Timestamp with a precision of one minute, i.e., date and time with hours and minutes, corresponds to ABAP type 'w'.
`static int`	`TYPE_UTCSECOND` timestamp with a precision of one second, i.e., date and time with hours, minutes and seconds, corresponds to ABAP type 'n'.
`static int`	`TYPE_XSTRING` Byte array of variable length.
`static int`	`UNINITIALIZED` The field info was not initialized yet.

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`getByteLength(int index)` Returns the byte length of the data field for non-Unicode layout at the specified index.
`int`	`getByteLength(String fieldName)` Returns the byte length of the field for non-Unicode layout with the specified name.
`String`	`getClassNameOfField(int index)` Returns the fully-qualified name of the Java class whose instances are manufactured if the methods `getValue(int index)` or `getValue(String fieldName)` are called to retrieve a value from the field.
`String`	`getClassNameOfField(String fieldName)` Returns the fully-qualified name of the Java class whose instances are manufactured if the methods `getValue(int index)` or `getValue(String fieldName)` are called to retrieve a value from the field.
`int`	`getDecimals(int index)` Returns the number of decimals of the data field at the specified index Decimals are only necessary for the JCO data types TYPE_BCD and TYPE_FLOAT, respectively.
`int`	`getDecimals(String fieldName)` Returns the number of decimals for the field with the specified name Decimals are only necessary for the JCO data types TYPE_BCD and TYPE_FLOAT, respectively.
`String`	`getDescription(int index)` Returns the descriptional text of the data field at the specified index.
`String`	`getDescription(String fieldName)` Returns the descriptional text for the field with the specified name.
`JCoExtendedFieldMetaData`	`getExtendedFieldMetaData(int index)` Returns the extended field metadata object at the specified index.
`JCoExtendedFieldMetaData`	`getExtendedFieldMetaData(String fieldName)` Returns the extended metadata object for the field with the specified name.
`int`	`getFieldCount()` Returns the number of entries (fields).
`int`	`getLength(int index)` Returns the max length of the data field at the specified index.
`int`	`getLength(String fieldName)` Returns the max length of the data field at the specified index.
`String`	`getName()` Returns the name of the table/structure this meta-data describes.
`String`	`getName(int index)` Returns the field name of the data field at the specified index.
`JCoRecordMetaData`	`getRecordMetaData(int index)` Returns the meta data object for the field, if the specified field is a table or structure and was defined with a reference to a meta data object.
`JCoRecordMetaData`	`getRecordMetaData(String fieldName)` Returns the meta data object for the field, if the specified field is a table or structure and was defined with a reference to a meta data object.
`String`	`getRecordTypeName(int index)` Returns the table/structure name of the data field or `null` if no table name is available.
`String`	`getRecordTypeName(String fieldName)` Returns the table/structure or data element name of the data field or `null` if no table name or data element name is available.
`int`	`getType(int index)` Returns the JCo data type of the data field at the specified index.
`int`	`getType(String fieldName)` Returns the JCo data type of the data for the field with the specified name.
`String`	`getTypeAsString(int index)` Returns a String representation of the JCo data type of the data field at the specified index.
`String`	`getTypeAsString(String fieldName)` Returns a String representation of the JCo data type of the data field for the field with the specified name.
`int`	`getUnicodeByteLength(int index)` Returns the length of the data field at the specified index for Unicode layout.
`int`	`getUnicodeByteLength(String fieldName)` Returns the length of the field with the specified name for Unicode layout.
`boolean`	`hasField(String fieldName)` Checks whether a named field exists.
`int`	`indexOf(String fieldName)` Returns the index of the named field info.
`boolean`	`isAbapObject(int index)` Checks whether the field with the specified index is an ABAP object.
`boolean`	`isAbapObject(String fieldName)` Checks whether the field with the specified name is an ABAP object.
`boolean`	`isLocked()` Returns whether this meta data instance is locked.
`boolean`	`isNestedType1Structure(int index)` Checks whether the field at the specified index is a nested TYPE1 structure, which is a structure with a fixed length in memory, but with a nested layout.
`boolean`	`isNestedType1Structure(String fieldName)` Checks whether the field with the specified name is a nested TYPE1 structure, which is a structure with a fixed length in memory, but with a nested layout.
`boolean`	`isStructure(int index)` Checks whether the field at the specified index is a structure parameter.
`boolean`	`isStructure(String fieldName)` Checks whether the field with the specified name is a structure parameter.
`boolean`	`isTable(int index)` Checks whether the field is a table parameter.
`boolean`	`isTable(String fieldName)` Checks whether the field with the specified name is a table parameter.
`void`	`lock()` Locks the meta data to prevent further changes.
`void`	`setName(String name)` Sets the name of the table/structure this meta data describes.

- Field Detail
  - UNINITIALIZED
```
static final int UNINITIALIZED
```
    The field info was not initialized yet.
    
    See Also:
    Constant Field Values
  - TYPE_INVALID
```
static final int TYPE_INVALID
```
    The field info does not contain a valid JCO type.
    
    See Also:
    Constant Field Values
  - TYPE_CHAR
```
static final int TYPE_CHAR
```
    1-byte or multi-byte character.Fixed sized, blank padded. Corresponds to ABAP type 'C'.
    
    See Also:
    Constant Field Values
  - TYPE_DATE
```
static final int TYPE_DATE
```
    Date ( YYYYYMMDD ). Corresponds to ABAP type 'D'.
    
    See Also:
    Constant Field Values
  - TYPE_BCD
```
static final int TYPE_BCD
```
    Packed BCD number, any length between 1 and 16 bytes. Corresponds to ABAP type 'P'.
    
    See Also:
    Constant Field Values
  - TYPE_TIME
```
static final int TYPE_TIME
```
    Time (HHMMSS). Corresponds to ABAP type 'T'
    
    See Also:
    Constant Field Values
  - TYPE_BYTE
```
static final int TYPE_BYTE
```
    Raw data, binary, fixed length, zero padded. Corresponds to ABAP type 'X'.
    
    See Also:
    Constant Field Values
  - TYPE_ITAB
```
static final int TYPE_ITAB
```
    Internal table. (Deprecated! Not used)
    
    See Also:
    Constant Field Values
  - TYPE_NUM
```
static final int TYPE_NUM
```
    Digits, fixed size,'0' padded. Corresponds to ABAP type 'N'.
    
    See Also:
    Constant Field Values
  - TYPE_FLOAT
```
static final int TYPE_FLOAT
```
    Floating point,double precision. Corresponds to ABAP type 'F'.
    
    See Also:
    Constant Field Values
  - TYPE_INT
```
static final int TYPE_INT
```
    4-byte integer . Corresponds to ABAP type 'I'.
    
    See Also:
    Constant Field Values
  - TYPE_INT2
```
static final int TYPE_INT2
```
    2-byte integer . Corresponds to ABAP type 's'.
    
    See Also:
    Constant Field Values
  - TYPE_INT1
```
static final int TYPE_INT1
```
    1-byte integer . Corresponds to ABAP type 'b'.
    
    See Also:
    Constant Field Values
  - TYPE_STRUCTURE
```
static final int TYPE_STRUCTURE
```
    A heterogeneous structure. Corresponds to ABAP type 'u' and 'v'.
    
    See Also:
    Constant Field Values
  - TYPE_DECF16
```
static final int TYPE_DECF16
```
    decimal floating point. Corresponds to ABAP type 'a'.
    
    See Also:
    Constant Field Values
  - TYPE_DECF34
```
static final int TYPE_DECF34
```
    decimal floating point. Corresponds to ABAP type 'e'.
    
    See Also:
    Constant Field Values
  - TYPE_STRING
```
static final int TYPE_STRING
```
    UTF8 encoded string of variable length. Corresponds to ABAP type 'g'.
    
    See Also:
    Constant Field Values
  - TYPE_XSTRING
```
static final int TYPE_XSTRING
```
    Byte array of variable length. Corresponds to ABAP type 'y'.
    
    See Also:
    Constant Field Values
  - TYPE_INT8
```
static final int TYPE_INT8
```
    Eight-byte integer, corresponds to ABAP type '8'.
    
    See Also:
    Constant Field Values
  - TYPE_UTCLONG
```
static final int TYPE_UTCLONG
```
    Timestamp with high precision, i.e., date and time including fractions of a second, corresponds to ABAP type 'p'.
    
    See Also:
    Constant Field Values
  - TYPE_UTCSECOND
```
static final int TYPE_UTCSECOND
```
    timestamp with a precision of one second, i.e., date and time with hours, minutes and seconds, corresponds to ABAP type 'n'.
    
    See Also:
    Constant Field Values
  - TYPE_UTCMINUTE
```
static final int TYPE_UTCMINUTE
```
    Timestamp with a precision of one minute, i.e., date and time with hours and minutes, corresponds to ABAP type 'w'.
    
    See Also:
    Constant Field Values
  - TYPE_DTDAY
```
static final int TYPE_DTDAY
```
    Date representing year, month, and day, corresponds to ABAP type 'd'.
    
    See Also:
    Constant Field Values
  - TYPE_DTWEEK
```
static final int TYPE_DTWEEK
```
    Date representing a year and a week of the year, corresponds to ABAP type '7'.
    
    See Also:
    Constant Field Values
  - TYPE_DTMONTH
```
static final int TYPE_DTMONTH
```
    Date representing a year and a month, corresponds to ABAP type 'x'.
    
    See Also:
    Constant Field Values
  - TYPE_TSECOND
```
static final int TYPE_TSECOND
```
    Time representing hours, minutes, and seconds, corresponds to ABAP type 't'.
    
    See Also:
    Constant Field Values
  - TYPE_TMINUTE
```
static final int TYPE_TMINUTE
```
    Time representing hours and minutes, corresponds to ABAP type 'i'.
    
    See Also:
    Constant Field Values
  - TYPE_CDAY
```
static final int TYPE_CDAY
```
    Date representing a month and a day of the month without specifying a year, corresponds to ABAP type 'c'.
    
    See Also:
    Constant Field Values
  - TYPE_TABLE
```
static final int TYPE_TABLE
```
    A JCoTable. Corresponds to ABAP type 'h'.
    
    See Also:
    Constant Field Values
  - TYPE_EXCEPTION
```
static final int TYPE_EXCEPTION
```
    ABAP exception.
    
    See Also:
    Constant Field Values
  - TYPE_ABAPOBJECT
```
static final int TYPE_ABAPOBJECT
```
    ABAP object.
    
    See Also:
    Constant Field Values
  - TYPE_BOX
```
static final int TYPE_BOX
```
    ABAP boxed component.
    
    See Also:
    Constant Field Values
  - TYPE_GENERIC_BOX
```
static final int TYPE_GENERIC_BOX
```
    ABAP boxed generic component.
    
    See Also:
    Constant Field Values
- Method Detail
  - indexOf
```
int indexOf(String fieldName)
```
    Returns the index of the named field info.
    
    Parameters:
    fieldName - the name of the field for which the index is being returned
    
    Returns:
    the index of the named field in the fields list
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - hasField
```
boolean hasField(String fieldName)
```
    Checks whether a named field exists.
    
    Parameters:
    fieldName - the name of the field to check for existence
    
    Returns:
    true if the field with the specified name exist, false otherwise
  - getName
```
String getName()
```
    Returns the name of the table/structure this meta-data describes.
    
    Returns:
    The name of the underlying table/structure
  - setName
```
void setName(String name)
```
    Sets the name of the table/structure this meta data describes. This is in particular useful, when creating a similar instance from an existing metadata instance.
    
    Parameters:
    name - the name for the record meta data
    Since:
    
    JCo 3.0.7
  - getFieldCount
```
int getFieldCount()
```
    Returns the number of entries (fields).
    
    Returns:
    the number of entries
  - getName
```
String getName(int index)
```
    Returns the field name of the data field at the specified index. The field name is used for identfying a field in a structure or table row.
    
    Parameters:
    index - the index of the field
    
    Returns:
    The field name of the data field described by this meta information object.
  - getRecordTypeName
```
String getRecordTypeName(int index)
```
    Returns the table/structure name of the data field or null if no table name is available.
    
    Parameters:
    index - the index of the field
    
    Returns:
    The table/structure name of the data field described by this meta information object.
  - getRecordTypeName
```
String getRecordTypeName(String fieldName)
```
    Returns the table/structure or data element name of the data field or null if no table name or data element name is available.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    The table/structure name of the data field described by this meta information object.
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getRecordMetaData
```
JCoRecordMetaData getRecordMetaData(int index)
```
    Returns the meta data object for the field, if the specified field is a table or structure and was defined with a reference to a meta data object.
    The method will return null if no meta data are available. This is the case if the definition was done with type name or the meta data object was not obtained from repository. Note: to get the proper meta data object for the field it is possible to call
```
                JCoRepository repository;
      ...
        repository.getRecordMetaData(metaDataInstance.getRecordTypeName(index));
 
```
    Parameters:
    index - the index of the field
    
    Returns:
    The table/structure metadata of the data field or null
    See Also:
    getRecordTypeName(int)
  - getRecordMetaData
```
JCoRecordMetaData getRecordMetaData(String fieldName)
```
    Returns the meta data object for the field, if the specified field is a table or structure and was defined with a reference to a meta data object.
    The method will return null if no meta data are available. This is the case if the definition was done with type name or the meta data object was not obtained from repository. Note: to get the proper meta data object for the field it is possible to call
```
                JCoRepository repository;
      ...
        repository.getRecordMetaData(metaDataInstance.getRecordTypeName(index));
 
```
    Parameters:
    fieldName - the name of the field
    
    Returns:
    The table/structure metadata of the data field or null
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
    See Also:
    getRecordTypeName(String)
  - getExtendedFieldMetaData
```
JCoExtendedFieldMetaData getExtendedFieldMetaData(int index)
```
    Returns the extended field metadata object at the specified index.
    
    Parameters:
    index - the index of the field
    
    Returns:
    the extended field metadata object or null if not available
  - getExtendedFieldMetaData
```
JCoExtendedFieldMetaData getExtendedFieldMetaData(String fieldName)
```
    Returns the extended metadata object for the field with the specified name.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    the extended field metadata object or null if not available
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getUnicodeByteLength
```
int getUnicodeByteLength(int index)
```
    Returns the length of the data field at the specified index for Unicode layout.
    
    Parameters:
    index - the index of the field
    
    Returns:
    data field length for Unicode layout
  - getUnicodeByteLength
```
int getUnicodeByteLength(String fieldName)
```
    Returns the length of the field with the specified name for Unicode layout.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    data field length for Unicode layout
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getByteLength
```
int getByteLength(int index)
```
    Returns the byte length of the data field for non-Unicode layout at the specified index.
    
    Parameters:
    index - the index of the field
    
    Returns:
    data field length for non-Unicode layout
  - getByteLength
```
int getByteLength(String fieldName)
```
    Returns the byte length of the field for non-Unicode layout with the specified name.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    data field length for non-Unicode layout
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getLength
```
int getLength(int index)
```
    Returns the max length of the data field at the specified index.
    - for the character based types the char length will be returned.
    - for type STRING or XSTRING 0
    - for type STRUCTURE or TABLE 0
    - for numerical types the byte length will be returned
    Note: in case of deep metadata the length for tables and structures can only be requested by their metadata directly.
    Parameters:
    index - the index of the field
    
    Returns:
    data field length
  - getLength
```
int getLength(String fieldName)
```
    Returns the max length of the data field at the specified index.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    data field length
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getType
```
int getType(int index)
```
    Returns the JCo data type of the data field at the specified index.
    
    Parameters:
    index - the index of the field
    
    Returns:
    the JCo data type
  - getType
```
int getType(String fieldName)
```
    Returns the JCo data type of the data for the field with the specified name.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    the JCo data type
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getTypeAsString
```
String getTypeAsString(int index)
```
    Returns a String representation of the JCo data type of the data field at the specified index.
    
    Parameters:
    index - the index of the field
    
    Returns:
    a String description of the JCo data type
  - getTypeAsString
```
String getTypeAsString(String fieldName)
```
    Returns a String representation of the JCo data type of the data field for the field with the specified name.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    a String description of the JCo data type
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getClassNameOfField
```
String getClassNameOfField(String fieldName)
```
    Returns the fully-qualified name of the Java class whose instances are manufactured if the methods getValue(int index) or getValue(String fieldName) are called to retrieve a value from the field.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    the fully-qualified class name of the value object
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getClassNameOfField
```
String getClassNameOfField(int index)
```
    Returns the fully-qualified name of the Java class whose instances are manufactured if the methods getValue(int index) or getValue(String fieldName) are called to retrieve a value from the field.
    
    Parameters:
    index - the field index
    
    Returns:
    the fully-qualified class name of the value object
  - getDecimals
```
int getDecimals(int index)
```
    Returns the number of decimals of the data field at the specified index Decimals are only necessary for the JCO data types TYPE_BCD and TYPE_FLOAT, respectively.
    
    Parameters:
    index - the index of the field
    
    Returns:
    data field number of decimals.
  - getDecimals
```
int getDecimals(String fieldName)
```
    Returns the number of decimals for the field with the specified name Decimals are only necessary for the JCO data types TYPE_BCD and TYPE_FLOAT, respectively.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    data field number of decimals.
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - getDescription
```
String getDescription(int index)
```
    Returns the descriptional text of the data field at the specified index.
    
    Parameters:
    index - the index of the field
    
    Returns:
    A descriptional text of the data field
  - getDescription
```
String getDescription(String fieldName)
```
    Returns the descriptional text for the field with the specified name.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    A descriptional text of the data field
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - isStructure
```
boolean isStructure(int index)
```
    Checks whether the field at the specified index is a structure parameter.
    
    Parameters:
    index - the index of the field
    
    Returns:
    true if the specified field is a structure parameter, false otherwise
  - isStructure
```
boolean isStructure(String fieldName)
```
    Checks whether the field with the specified name is a structure parameter.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    true if the specified field is a structure parameter, false otherwise
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - isNestedType1Structure
```
boolean isNestedType1Structure(int index)
```
    Checks whether the field at the specified index is a nested TYPE1 structure, which is a structure with a fixed length in memory, but with a nested layout.
    
    Parameters:
    index - the index of the field
    
    Returns:
    true if the specified field is a nested TYPE1 structure, false otherwise
  - isNestedType1Structure
```
boolean isNestedType1Structure(String fieldName)
```
    Checks whether the field with the specified name is a nested TYPE1 structure, which is a structure with a fixed length in memory, but with a nested layout.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    true if the specified field is a nested TYPE1 structure, false otherwise
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - isTable
```
boolean isTable(int index)
```
    Checks whether the field is a table parameter.
    
    Parameters:
    index - the index of the field
    
    Returns:
    true if the specified field is a table parameter, false otherwise
  - isTable
```
boolean isTable(String fieldName)
```
    Checks whether the field with the specified name is a table parameter.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    true if the specified field is a table parameter, false otherwise
    
    Throws:
    
    JCoRuntimeException - with group JCO_ERROR_FIELD_NOT_FOUND if a field with this name does not exist
  - isAbapObject
```
boolean isAbapObject(String fieldName)
```
    Checks whether the field with the specified name is an ABAP object.
    
    Parameters:
    fieldName - the name of the field
    
    Returns:
    true if the specified field is an ABAP object, false otherwise
  - isAbapObject
```
boolean isAbapObject(int index)
```
    Checks whether the field with the specified index is an ABAP object.
    
    Parameters:
    index - the index of the field
    
    Returns:
    true if the specified field is an ABAP object, false otherwise
  - lock
```
void lock()
```
    Locks the meta data to prevent further changes.
    Any method that would change the metadata instance will throw an UnsupportedOperationException from then on.
    
    See Also:
    JCoListMetaData.add(String, int, int, int, int, String, String, int, Object, String, JCoExtendedFieldMetaData), JCoRecordMetaData.add(String, int, int, int, int, int, int, String, Object, JCoExtendedFieldMetaData)
  - isLocked
```
boolean isLocked()
```
    Returns whether this meta data instance is locked.
    
    Returns:
    true if the meta data instance is locked, false otherwise.
    See Also:
    lock()

Interface JCoMetaData

Field Summary

Method Summary

Field Detail

UNINITIALIZED

TYPE_INVALID

TYPE_CHAR

TYPE_DATE

TYPE_BCD

TYPE_TIME

TYPE_BYTE

TYPE_ITAB

TYPE_NUM

TYPE_FLOAT

TYPE_INT

TYPE_INT2

TYPE_INT1

TYPE_STRUCTURE

TYPE_DECF16

TYPE_DECF34

TYPE_STRING

TYPE_XSTRING

TYPE_INT8

TYPE_UTCLONG

TYPE_UTCSECOND

TYPE_UTCMINUTE

TYPE_DTDAY

TYPE_DTWEEK

TYPE_DTMONTH

TYPE_TSECOND

TYPE_TMINUTE

TYPE_CDAY

TYPE_TABLE

TYPE_EXCEPTION

TYPE_ABAPOBJECT

TYPE_BOX

TYPE_GENERIC_BOX

Method Detail

indexOf

hasField

getName

setName

getFieldCount

getName

getRecordTypeName

getRecordTypeName

getRecordMetaData

getRecordMetaData

getExtendedFieldMetaData

getExtendedFieldMetaData

getUnicodeByteLength

getUnicodeByteLength

getByteLength

getByteLength

getLength

getLength

getType

getType

getTypeAsString

getTypeAsString

getClassNameOfField

getClassNameOfField

getDecimals

getDecimals

getDescription

getDescription

isStructure

isStructure

isNestedType1Structure

isNestedType1Structure

isTable

isTable

isAbapObject

isAbapObject

lock

isLocked