Java Code Examples for org.apache.flink.api.common.typeutils.CompositeType#getFlatFields()
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org.apache.flink.api.common.typeutils.CompositeType#getFlatFields() .
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Example 1
| Source File: PojoTypeInfo.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
|
@Override
@PublicEvolving
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if(!matcher.matches()) {
throw new InvalidFieldReferenceException("Invalid POJO field reference \""+fieldExpression+"\".");
}
String field = matcher.group(0);
if(field.equals(ExpressionKeys.SELECT_ALL_CHAR) || field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA)) {
// handle select all
int keyPosition = 0;
for(PojoField pField : fields) {
if(pField.getTypeInformation() instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>)pField.getTypeInformation();
cType.getFlatFields(String.valueOf(ExpressionKeys.SELECT_ALL_CHAR), offset + keyPosition, result);
keyPosition += cType.getTotalFields()-1;
} else {
result.add(
new NamedFlatFieldDescriptor(
pField.getField().getName(),
offset + keyPosition,
pField.getTypeInformation()));
}
keyPosition++;
}
return;
} else {
field = matcher.group(1);
}
// get field
int fieldPos = -1;
TypeInformation<?> fieldType = null;
for (int i = 0; i < fields.length; i++) {
if (fields[i].getField().getName().equals(field)) {
fieldPos = i;
fieldType = fields[i].getTypeInformation();
break;
}
}
if (fieldPos == -1) {
throw new InvalidFieldReferenceException("Unable to find field \""+field+"\" in type "+this+".");
}
String tail = matcher.group(3);
if(tail == null) {
if(fieldType instanceof CompositeType) {
// forward offset
for(int i=0; i<fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
// add all fields of composite type
((CompositeType<?>) fieldType).getFlatFields("*", offset, result);
} else {
// we found the field to add
// compute flat field position by adding skipped fields
int flatFieldPos = offset;
for(int i=0; i<fieldPos; i++) {
flatFieldPos += this.getTypeAt(i).getTotalFields();
}
result.add(new FlatFieldDescriptor(flatFieldPos, fieldType));
}
} else {
if(fieldType instanceof CompositeType<?>) {
// forward offset
for(int i=0; i<fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
((CompositeType<?>) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException("Nested field expression \""+tail+"\" not possible on atomic type "+fieldType+".");
}
}
}
Example 2
| Source File: RowTypeInfo.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
|
@Override
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if (!matcher.matches()) {
throw new InvalidFieldReferenceException(
"Invalid tuple field reference \"" + fieldExpression + "\".");
}
String field = matcher.group(0);
if ((field.equals(ExpressionKeys.SELECT_ALL_CHAR)) ||
(field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA))) {
// handle select all
int keyPosition = 0;
for (TypeInformation<?> fType : types) {
if (fType instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>) fType;
cType.getFlatFields(ExpressionKeys.SELECT_ALL_CHAR, offset + keyPosition, result);
keyPosition += cType.getTotalFields() - 1;
} else {
result.add(new FlatFieldDescriptor(offset + keyPosition, fType));
}
keyPosition++;
}
} else {
field = matcher.group(1);
Matcher intFieldMatcher = PATTERN_INT_FIELD.matcher(field);
int fieldIndex;
if (intFieldMatcher.matches()) {
// field expression is an integer
fieldIndex = Integer.valueOf(field);
} else {
fieldIndex = this.getFieldIndex(field);
}
// fetch the field type will throw exception if the index is illegal
TypeInformation<?> fieldType = this.getTypeAt(fieldIndex);
// compute the offset,
for (int i = 0; i < fieldIndex; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
String tail = matcher.group(3);
if (tail == null) {
// expression hasn't nested field
if (fieldType instanceof CompositeType) {
((CompositeType) fieldType).getFlatFields("*", offset, result);
} else {
result.add(new FlatFieldDescriptor(offset, fieldType));
}
} else {
// expression has nested field
if (fieldType instanceof CompositeType) {
((CompositeType) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException(
"Nested field expression \"" + tail + "\" not possible on atomic type " + fieldType + ".");
}
}
}
}
Example 3
| Source File: TupleTypeInfoBase.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
|
@Override
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if (!matcher.matches()) {
throw new InvalidFieldReferenceException("Invalid tuple field reference \""+fieldExpression+"\".");
}
String field = matcher.group(0);
if (field.equals(ExpressionKeys.SELECT_ALL_CHAR) || field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA)) {
// handle select all
int keyPosition = 0;
for (TypeInformation<?> type : types) {
if (type instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>) type;
cType.getFlatFields(String.valueOf(ExpressionKeys.SELECT_ALL_CHAR), offset + keyPosition, result);
keyPosition += cType.getTotalFields() - 1;
} else {
result.add(new FlatFieldDescriptor(offset + keyPosition, type));
}
keyPosition++;
}
} else {
String fieldStr = matcher.group(1);
Matcher fieldMatcher = PATTERN_FIELD.matcher(fieldStr);
if (!fieldMatcher.matches()) {
throw new RuntimeException("Invalid matcher pattern");
}
field = fieldMatcher.group(2);
int fieldPos = Integer.valueOf(field);
if (fieldPos >= this.getArity()) {
throw new InvalidFieldReferenceException("Tuple field expression \"" + fieldStr + "\" out of bounds of " + this.toString() + ".");
}
TypeInformation<?> fieldType = this.getTypeAt(fieldPos);
String tail = matcher.group(5);
if (tail == null) {
if (fieldType instanceof CompositeType) {
// forward offsets
for (int i = 0; i < fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
// add all fields of composite type
((CompositeType<?>) fieldType).getFlatFields("*", offset, result);
} else {
// we found the field to add
// compute flat field position by adding skipped fields
int flatFieldPos = offset;
for (int i = 0; i < fieldPos; i++) {
flatFieldPos += this.getTypeAt(i).getTotalFields();
}
result.add(new FlatFieldDescriptor(flatFieldPos, fieldType));
}
} else {
if (fieldType instanceof CompositeType<?>) {
// forward offset
for (int i = 0; i < fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
((CompositeType<?>) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException("Nested field expression \"" + tail + "\" not possible on atomic type " + fieldType + ".");
}
}
}
}
Example 4
| Source File: Keys.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
|
/**
* Create int-based (non-nested) field position keys on a tuple type.
*/
public ExpressionKeys(int[] keyPositions, TypeInformation<T> type, boolean allowEmpty) {
if (!type.isTupleType() || !(type instanceof CompositeType)) {
throw new InvalidProgramException("Specifying keys via field positions is only valid " +
"for tuple data types. Type: " + type);
}
if (type.getArity() == 0) {
throw new InvalidProgramException("Tuple size must be greater than 0. Size: " + type.getArity());
}
if (!allowEmpty && (keyPositions == null || keyPositions.length == 0)) {
throw new IllegalArgumentException("The grouping fields must not be empty.");
}
this.keyFields = new ArrayList<>();
if (keyPositions == null || keyPositions.length == 0) {
// use all tuple fields as key fields
keyPositions = createIncrIntArray(type.getArity());
} else {
rangeCheckFields(keyPositions, type.getArity() - 1);
}
checkArgument(keyPositions.length > 0, "Grouping fields can not be empty at this point");
// extract key field types
CompositeType<T> cType = (CompositeType<T>)type;
this.keyFields = new ArrayList<>(type.getTotalFields());
// for each key position, find all (nested) field types
String[] fieldNames = cType.getFieldNames();
this.originalKeyTypes = new TypeInformation<?>[keyPositions.length];
ArrayList<FlatFieldDescriptor> tmpList = new ArrayList<>();
for (int i = 0; i < keyPositions.length; i++) {
int keyPos = keyPositions[i];
tmpList.clear();
// get all flat fields
this.originalKeyTypes[i] = cType.getTypeAt(keyPos);
cType.getFlatFields(fieldNames[keyPos], 0, tmpList);
// check if fields are of key type
for(FlatFieldDescriptor ffd : tmpList) {
if(!ffd.getType().isKeyType()) {
throw new InvalidProgramException("This type (" + ffd.getType() + ") cannot be used as key.");
}
}
this.keyFields.addAll(tmpList);
}
}
Example 5
| Source File: PojoTypeInfo.java From flink with Apache License 2.0 | 4 votes |
|
@Override
@PublicEvolving
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if(!matcher.matches()) {
throw new InvalidFieldReferenceException("Invalid POJO field reference \""+fieldExpression+"\".");
}
String field = matcher.group(0);
if(field.equals(ExpressionKeys.SELECT_ALL_CHAR) || field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA)) {
// handle select all
int keyPosition = 0;
for(PojoField pField : fields) {
if(pField.getTypeInformation() instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>)pField.getTypeInformation();
cType.getFlatFields(String.valueOf(ExpressionKeys.SELECT_ALL_CHAR), offset + keyPosition, result);
keyPosition += cType.getTotalFields()-1;
} else {
result.add(
new NamedFlatFieldDescriptor(
pField.getField().getName(),
offset + keyPosition,
pField.getTypeInformation()));
}
keyPosition++;
}
return;
} else {
field = matcher.group(1);
}
// get field
int fieldPos = -1;
TypeInformation<?> fieldType = null;
for (int i = 0; i < fields.length; i++) {
if (fields[i].getField().getName().equals(field)) {
fieldPos = i;
fieldType = fields[i].getTypeInformation();
break;
}
}
if (fieldPos == -1) {
throw new InvalidFieldReferenceException("Unable to find field \""+field+"\" in type "+this+".");
}
String tail = matcher.group(3);
if(tail == null) {
if(fieldType instanceof CompositeType) {
// forward offset
for(int i=0; i<fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
// add all fields of composite type
((CompositeType<?>) fieldType).getFlatFields("*", offset, result);
} else {
// we found the field to add
// compute flat field position by adding skipped fields
int flatFieldPos = offset;
for(int i=0; i<fieldPos; i++) {
flatFieldPos += this.getTypeAt(i).getTotalFields();
}
result.add(new FlatFieldDescriptor(flatFieldPos, fieldType));
}
} else {
if(fieldType instanceof CompositeType<?>) {
// forward offset
for(int i=0; i<fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
((CompositeType<?>) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException("Nested field expression \""+tail+"\" not possible on atomic type "+fieldType+".");
}
}
}
Example 6
| Source File: RowTypeInfo.java From flink with Apache License 2.0 | 4 votes |
|
@Override
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if (!matcher.matches()) {
throw new InvalidFieldReferenceException(
"Invalid tuple field reference \"" + fieldExpression + "\".");
}
String field = matcher.group(0);
if ((field.equals(ExpressionKeys.SELECT_ALL_CHAR)) ||
(field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA))) {
// handle select all
int keyPosition = 0;
for (TypeInformation<?> fType : types) {
if (fType instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>) fType;
cType.getFlatFields(ExpressionKeys.SELECT_ALL_CHAR, offset + keyPosition, result);
keyPosition += cType.getTotalFields() - 1;
} else {
result.add(new FlatFieldDescriptor(offset + keyPosition, fType));
}
keyPosition++;
}
} else {
field = matcher.group(1);
Matcher intFieldMatcher = PATTERN_INT_FIELD.matcher(field);
int fieldIndex;
if (intFieldMatcher.matches()) {
// field expression is an integer
fieldIndex = Integer.valueOf(field);
} else {
fieldIndex = this.getFieldIndex(field);
}
// fetch the field type will throw exception if the index is illegal
TypeInformation<?> fieldType = this.getTypeAt(fieldIndex);
// compute the offset,
for (int i = 0; i < fieldIndex; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
String tail = matcher.group(3);
if (tail == null) {
// expression hasn't nested field
if (fieldType instanceof CompositeType) {
((CompositeType) fieldType).getFlatFields("*", offset, result);
} else {
result.add(new FlatFieldDescriptor(offset, fieldType));
}
} else {
// expression has nested field
if (fieldType instanceof CompositeType) {
((CompositeType) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException(
"Nested field expression \"" + tail + "\" not possible on atomic type " + fieldType + ".");
}
}
}
}
Example 7
| Source File: TupleTypeInfoBase.java From flink with Apache License 2.0 | 4 votes |
|
@Override
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if (!matcher.matches()) {
throw new InvalidFieldReferenceException("Invalid tuple field reference \""+fieldExpression+"\".");
}
String field = matcher.group(0);
if (field.equals(ExpressionKeys.SELECT_ALL_CHAR) || field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA)) {
// handle select all
int keyPosition = 0;
for (TypeInformation<?> type : types) {
if (type instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>) type;
cType.getFlatFields(String.valueOf(ExpressionKeys.SELECT_ALL_CHAR), offset + keyPosition, result);
keyPosition += cType.getTotalFields() - 1;
} else {
result.add(new FlatFieldDescriptor(offset + keyPosition, type));
}
keyPosition++;
}
} else {
String fieldStr = matcher.group(1);
Matcher fieldMatcher = PATTERN_FIELD.matcher(fieldStr);
if (!fieldMatcher.matches()) {
throw new RuntimeException("Invalid matcher pattern");
}
field = fieldMatcher.group(2);
int fieldPos = Integer.valueOf(field);
if (fieldPos >= this.getArity()) {
throw new InvalidFieldReferenceException("Tuple field expression \"" + fieldStr + "\" out of bounds of " + this.toString() + ".");
}
TypeInformation<?> fieldType = this.getTypeAt(fieldPos);
String tail = matcher.group(5);
if (tail == null) {
if (fieldType instanceof CompositeType) {
// forward offsets
for (int i = 0; i < fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
// add all fields of composite type
((CompositeType<?>) fieldType).getFlatFields("*", offset, result);
} else {
// we found the field to add
// compute flat field position by adding skipped fields
int flatFieldPos = offset;
for (int i = 0; i < fieldPos; i++) {
flatFieldPos += this.getTypeAt(i).getTotalFields();
}
result.add(new FlatFieldDescriptor(flatFieldPos, fieldType));
}
} else {
if (fieldType instanceof CompositeType<?>) {
// forward offset
for (int i = 0; i < fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
((CompositeType<?>) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException("Nested field expression \"" + tail + "\" not possible on atomic type " + fieldType + ".");
}
}
}
}
Example 8
| Source File: Keys.java From flink with Apache License 2.0 | 4 votes |
|
/**
* Create int-based (non-nested) field position keys on a tuple type.
*/
public ExpressionKeys(int[] keyPositions, TypeInformation<T> type, boolean allowEmpty) {
if (!type.isTupleType() || !(type instanceof CompositeType)) {
throw new InvalidProgramException("Specifying keys via field positions is only valid " +
"for tuple data types. Type: " + type);
}
if (type.getArity() == 0) {
throw new InvalidProgramException("Tuple size must be greater than 0. Size: " + type.getArity());
}
if (!allowEmpty && (keyPositions == null || keyPositions.length == 0)) {
throw new IllegalArgumentException("The grouping fields must not be empty.");
}
this.keyFields = new ArrayList<>();
if (keyPositions == null || keyPositions.length == 0) {
// use all tuple fields as key fields
keyPositions = createIncrIntArray(type.getArity());
} else {
rangeCheckFields(keyPositions, type.getArity() - 1);
}
checkArgument(keyPositions.length > 0, "Grouping fields can not be empty at this point");
// extract key field types
CompositeType<T> cType = (CompositeType<T>)type;
this.keyFields = new ArrayList<>(type.getTotalFields());
// for each key position, find all (nested) field types
String[] fieldNames = cType.getFieldNames();
this.originalKeyTypes = new TypeInformation<?>[keyPositions.length];
ArrayList<FlatFieldDescriptor> tmpList = new ArrayList<>();
for (int i = 0; i < keyPositions.length; i++) {
int keyPos = keyPositions[i];
tmpList.clear();
// get all flat fields
this.originalKeyTypes[i] = cType.getTypeAt(keyPos);
cType.getFlatFields(fieldNames[keyPos], 0, tmpList);
// check if fields are of key type
for(FlatFieldDescriptor ffd : tmpList) {
if(!ffd.getType().isKeyType()) {
throw new InvalidProgramException("This type (" + ffd.getType() + ") cannot be used as key.");
}
}
this.keyFields.addAll(tmpList);
}
}
Example 9
| Source File: PojoTypeInfo.java From flink with Apache License 2.0 | 4 votes |
|
@Override
@PublicEvolving
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if(!matcher.matches()) {
throw new InvalidFieldReferenceException("Invalid POJO field reference \""+fieldExpression+"\".");
}
String field = matcher.group(0);
if(field.equals(ExpressionKeys.SELECT_ALL_CHAR) || field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA)) {
// handle select all
int keyPosition = 0;
for(PojoField pField : fields) {
if(pField.getTypeInformation() instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>)pField.getTypeInformation();
cType.getFlatFields(String.valueOf(ExpressionKeys.SELECT_ALL_CHAR), offset + keyPosition, result);
keyPosition += cType.getTotalFields()-1;
} else {
result.add(
new NamedFlatFieldDescriptor(
pField.getField().getName(),
offset + keyPosition,
pField.getTypeInformation()));
}
keyPosition++;
}
return;
} else {
field = matcher.group(1);
}
// get field
int fieldPos = -1;
TypeInformation<?> fieldType = null;
for (int i = 0; i < fields.length; i++) {
if (fields[i].getField().getName().equals(field)) {
fieldPos = i;
fieldType = fields[i].getTypeInformation();
break;
}
}
if (fieldPos == -1) {
throw new InvalidFieldReferenceException("Unable to find field \""+field+"\" in type "+this+".");
}
String tail = matcher.group(3);
if(tail == null) {
if(fieldType instanceof CompositeType) {
// forward offset
for(int i=0; i<fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
// add all fields of composite type
((CompositeType<?>) fieldType).getFlatFields("*", offset, result);
} else {
// we found the field to add
// compute flat field position by adding skipped fields
int flatFieldPos = offset;
for(int i=0; i<fieldPos; i++) {
flatFieldPos += this.getTypeAt(i).getTotalFields();
}
result.add(new FlatFieldDescriptor(flatFieldPos, fieldType));
}
} else {
if(fieldType instanceof CompositeType<?>) {
// forward offset
for(int i=0; i<fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
((CompositeType<?>) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException("Nested field expression \""+tail+"\" not possible on atomic type "+fieldType+".");
}
}
}
Example 10
| Source File: RowTypeInfo.java From flink with Apache License 2.0 | 4 votes |
|
@Override
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if (!matcher.matches()) {
throw new InvalidFieldReferenceException(
"Invalid tuple field reference \"" + fieldExpression + "\".");
}
String field = matcher.group(0);
if ((field.equals(ExpressionKeys.SELECT_ALL_CHAR)) ||
(field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA))) {
// handle select all
int keyPosition = 0;
for (TypeInformation<?> fType : types) {
if (fType instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>) fType;
cType.getFlatFields(ExpressionKeys.SELECT_ALL_CHAR, offset + keyPosition, result);
keyPosition += cType.getTotalFields() - 1;
} else {
result.add(new FlatFieldDescriptor(offset + keyPosition, fType));
}
keyPosition++;
}
} else {
field = matcher.group(1);
Matcher intFieldMatcher = PATTERN_INT_FIELD.matcher(field);
int fieldIndex;
if (intFieldMatcher.matches()) {
// field expression is an integer
fieldIndex = Integer.valueOf(field);
} else {
fieldIndex = this.getFieldIndex(field);
}
// fetch the field type will throw exception if the index is illegal
TypeInformation<?> fieldType = this.getTypeAt(fieldIndex);
// compute the offset,
for (int i = 0; i < fieldIndex; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
String tail = matcher.group(3);
if (tail == null) {
// expression hasn't nested field
if (fieldType instanceof CompositeType) {
((CompositeType) fieldType).getFlatFields("*", offset, result);
} else {
result.add(new FlatFieldDescriptor(offset, fieldType));
}
} else {
// expression has nested field
if (fieldType instanceof CompositeType) {
((CompositeType) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException(
"Nested field expression \"" + tail + "\" not possible on atomic type " + fieldType + ".");
}
}
}
}
Example 11
| Source File: TupleTypeInfoBase.java From flink with Apache License 2.0 | 4 votes |
|
@Override
public void getFlatFields(String fieldExpression, int offset, List<FlatFieldDescriptor> result) {
Matcher matcher = PATTERN_NESTED_FIELDS_WILDCARD.matcher(fieldExpression);
if (!matcher.matches()) {
throw new InvalidFieldReferenceException("Invalid tuple field reference \""+fieldExpression+"\".");
}
String field = matcher.group(0);
if (field.equals(ExpressionKeys.SELECT_ALL_CHAR) || field.equals(ExpressionKeys.SELECT_ALL_CHAR_SCALA)) {
// handle select all
int keyPosition = 0;
for (TypeInformation<?> type : types) {
if (type instanceof CompositeType) {
CompositeType<?> cType = (CompositeType<?>) type;
cType.getFlatFields(String.valueOf(ExpressionKeys.SELECT_ALL_CHAR), offset + keyPosition, result);
keyPosition += cType.getTotalFields() - 1;
} else {
result.add(new FlatFieldDescriptor(offset + keyPosition, type));
}
keyPosition++;
}
} else {
String fieldStr = matcher.group(1);
Matcher fieldMatcher = PATTERN_FIELD.matcher(fieldStr);
if (!fieldMatcher.matches()) {
throw new RuntimeException("Invalid matcher pattern");
}
field = fieldMatcher.group(2);
int fieldPos = Integer.valueOf(field);
if (fieldPos >= this.getArity()) {
throw new InvalidFieldReferenceException("Tuple field expression \"" + fieldStr + "\" out of bounds of " + this.toString() + ".");
}
TypeInformation<?> fieldType = this.getTypeAt(fieldPos);
String tail = matcher.group(5);
if (tail == null) {
if (fieldType instanceof CompositeType) {
// forward offsets
for (int i = 0; i < fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
// add all fields of composite type
((CompositeType<?>) fieldType).getFlatFields("*", offset, result);
} else {
// we found the field to add
// compute flat field position by adding skipped fields
int flatFieldPos = offset;
for (int i = 0; i < fieldPos; i++) {
flatFieldPos += this.getTypeAt(i).getTotalFields();
}
result.add(new FlatFieldDescriptor(flatFieldPos, fieldType));
}
} else {
if (fieldType instanceof CompositeType<?>) {
// forward offset
for (int i = 0; i < fieldPos; i++) {
offset += this.getTypeAt(i).getTotalFields();
}
((CompositeType<?>) fieldType).getFlatFields(tail, offset, result);
} else {
throw new InvalidFieldReferenceException("Nested field expression \"" + tail + "\" not possible on atomic type " + fieldType + ".");
}
}
}
}
Example 12
| Source File: Keys.java From flink with Apache License 2.0 | 4 votes |
|
/**
* Create int-based (non-nested) field position keys on a tuple type.
*/
public ExpressionKeys(int[] keyPositions, TypeInformation<T> type, boolean allowEmpty) {
if (!type.isTupleType() || !(type instanceof CompositeType)) {
throw new InvalidProgramException("Specifying keys via field positions is only valid " +
"for tuple data types. Type: " + type);
}
if (type.getArity() == 0) {
throw new InvalidProgramException("Tuple size must be greater than 0. Size: " + type.getArity());
}
if (!allowEmpty && (keyPositions == null || keyPositions.length == 0)) {
throw new IllegalArgumentException("The grouping fields must not be empty.");
}
this.keyFields = new ArrayList<>();
if (keyPositions == null || keyPositions.length == 0) {
// use all tuple fields as key fields
keyPositions = createIncrIntArray(type.getArity());
} else {
rangeCheckFields(keyPositions, type.getArity() - 1);
}
checkArgument(keyPositions.length > 0, "Grouping fields can not be empty at this point");
// extract key field types
CompositeType<T> cType = (CompositeType<T>)type;
this.keyFields = new ArrayList<>(type.getTotalFields());
// for each key position, find all (nested) field types
String[] fieldNames = cType.getFieldNames();
this.originalKeyTypes = new TypeInformation<?>[keyPositions.length];
ArrayList<FlatFieldDescriptor> tmpList = new ArrayList<>();
for (int i = 0; i < keyPositions.length; i++) {
int keyPos = keyPositions[i];
tmpList.clear();
// get all flat fields
this.originalKeyTypes[i] = cType.getTypeAt(keyPos);
cType.getFlatFields(fieldNames[keyPos], 0, tmpList);
// check if fields are of key type
for(FlatFieldDescriptor ffd : tmpList) {
if(!ffd.getType().isKeyType()) {
throw new InvalidProgramException("This type (" + ffd.getType() + ") cannot be used as key.");
}
}
this.keyFields.addAll(tmpList);
}
}
