Package io.inversion.dynamodb

Class DynamoDbQuery

java.lang.Object

io.inversion.query.Builder<T,T>

io.inversion.query.Query<DynamoDbQuery,DynamoDb,io.inversion.query.Select<io.inversion.query.Select<io.inversion.query.Select,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.From<io.inversion.query.From<io.inversion.query.From,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Where<io.inversion.query.Where<io.inversion.query.Where,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Group<io.inversion.query.Group<io.inversion.query.Group,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Order<io.inversion.query.Order<io.inversion.query.Order,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Page<io.inversion.query.Page<io.inversion.query.Page,DynamoDbQuery>,DynamoDbQuery>>

io.inversion.dynamodb.DynamoDbQuery

public class DynamoDbQuery
extends io.inversion.query.Query<DynamoDbQuery,DynamoDb,io.inversion.query.Select<io.inversion.query.Select<io.inversion.query.Select,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.From<io.inversion.query.From<io.inversion.query.From,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Where<io.inversion.query.Where<io.inversion.query.Where,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Group<io.inversion.query.Group<io.inversion.query.Group,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Order<io.inversion.query.Order<io.inversion.query.Order,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Page<io.inversion.query.Page<io.inversion.query.Page,DynamoDbQuery>,DynamoDbQuery>>

IMPLEMENTATION NOTE: Helpful DynamoDb Links

• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.OperatorsAndFunctions.html
• https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_Query.html
• https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/index.html
• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Introduction.html
• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryingJavaDocumentAPI.html
• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Query.html#FilteringResults
• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.ExpressionAttributeNames.html
• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.KeyConditions.html
• https://stackoverflow.com/questions/34349135/how-do-you-query-for-a-non-existent-null-attribute-in-dynamodb
• https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.QueryFilter.html

TODO: are all of these covered? EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN

Field Summary

Fields

Modifier and Type	Field	Description
static java.util.Map<java.lang.String,java.lang.String>	FUNCTION_MAP
static java.util.Map<java.lang.String,java.lang.String>	OPERATOR_MAP

Fields inherited from class io.inversion.query.Query

castValues, collection, db, dryRun, from, group, order, originalValues, page, select, where

Fields inherited from class io.inversion.query.Builder

builders, functions, parent, terms

Constructor Summary

Constructors

Constructor	Description
DynamoDbQuery()
DynamoDbQuery(DynamoDb db, io.inversion.Collection table, java.util.List<io.inversion.rql.Term> terms)

Method Summary

Modifier and Type	Method	Description
protected boolean	addTerm(java.lang.String token, io.inversion.rql.Term term)
protected java.util.List<io.inversion.rql.Term>	after(io.inversion.Index index, java.util.Map<java.lang.String,com.amazonaws.services.dynamodbv2.model.AttributeValue> attrs)
protected io.inversion.Index	calcIndex()
protected io.inversion.query.Where	createWhere()
io.inversion.Results	doSelect()
protected io.inversion.Results	doSelect0()
protected io.inversion.Results	doSelect1()
com.amazonaws.services.dynamodbv2.document.Table	getDynamoTable()
io.inversion.rql.Term	getPartKey()	Finds the primary or a secondary index to use based on what parameters were passed in.
java.lang.Object	getSelectSpec()
io.inversion.rql.Term	getSortKey()
protected java.lang.Object	getValue(com.amazonaws.services.dynamodbv2.model.AttributeValue v)
DynamoDbQuery	withDynamoTable(com.amazonaws.services.dynamodbv2.document.Table dynamoTable)

Methods inherited from class io.inversion.query.Query

clearValues, createFrom, createGroup, createOrder, createPage, createSelect, getBuilders, getCollection, getColValue, getColValueKeys, getColValues, getDb, getFrom, getGroup, getNumValues, getOrder, getOriginalValues, getPage, getSelect, getValues, getWhere, isDryRun, withCollection, withColValue, withDb, withDryRun, withTerm

Methods inherited from class io.inversion.query.Builder

clearFunctions, find, find, findAll, findAll, findInt, findTerm, getParent, getRoot, getTerms, isFunction, parse, r, removeBuilder, toString, toString, withBuilder, withFunctions, withFunctions, withParent, withTerm, withTerm, withTerms

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

OPERATOR_MAP

public static final java.util.Map<java.lang.String,java.lang.String> OPERATOR_MAP

FUNCTION_MAP

public static final java.util.Map<java.lang.String,java.lang.String> FUNCTION_MAP

Constructor Detail

DynamoDbQuery

public DynamoDbQuery()

DynamoDbQuery

public DynamoDbQuery(DynamoDb db,
                     io.inversion.Collection table,
                     java.util.List<io.inversion.rql.Term> terms)

Method Detail

createWhere

protected io.inversion.query.Where createWhere()

Overrides:

createWhere in class io.inversion.query.Query<DynamoDbQuery,DynamoDb,io.inversion.query.Select<io.inversion.query.Select<io.inversion.query.Select,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.From<io.inversion.query.From<io.inversion.query.From,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Where<io.inversion.query.Where<io.inversion.query.Where,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Group<io.inversion.query.Group<io.inversion.query.Group,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Order<io.inversion.query.Order<io.inversion.query.Order,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Page<io.inversion.query.Page<io.inversion.query.Page,DynamoDbQuery>,DynamoDbQuery>>

addTerm

protected boolean addTerm(java.lang.String token,
                          io.inversion.rql.Term term)

Overrides:

addTerm in class io.inversion.query.Builder<DynamoDbQuery,DynamoDbQuery>

getDynamoTable

public com.amazonaws.services.dynamodbv2.document.Table getDynamoTable()

withDynamoTable

public DynamoDbQuery withDynamoTable(com.amazonaws.services.dynamodbv2.document.Table dynamoTable)

doSelect

public io.inversion.Results doSelect()
                              throws io.inversion.ApiException

Overrides:

doSelect in class io.inversion.query.Query<DynamoDbQuery,DynamoDb,io.inversion.query.Select<io.inversion.query.Select<io.inversion.query.Select,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.From<io.inversion.query.From<io.inversion.query.From,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Where<io.inversion.query.Where<io.inversion.query.Where,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Group<io.inversion.query.Group<io.inversion.query.Group,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Order<io.inversion.query.Order<io.inversion.query.Order,DynamoDbQuery>,DynamoDbQuery>,io.inversion.query.Page<io.inversion.query.Page<io.inversion.query.Page,DynamoDbQuery>,DynamoDbQuery>>

Throws:

io.inversion.ApiException

doSelect0

protected io.inversion.Results doSelect0()
                                  throws java.lang.Exception

Throws:

java.lang.Exception

doSelect1

protected io.inversion.Results doSelect1()
                                  throws java.lang.Exception

Throws:

java.lang.Exception

after

protected java.util.List<io.inversion.rql.Term> after(io.inversion.Index index,
                                                      java.util.Map<java.lang.String,com.amazonaws.services.dynamodbv2.model.AttributeValue> attrs)

getValue

protected java.lang.Object getValue(com.amazonaws.services.dynamodbv2.model.AttributeValue v)

calcIndex

protected io.inversion.Index calcIndex()

Returns:

the best fit index to use for the query based on the params supplied

getPartKey

public io.inversion.rql.Term getPartKey()

Finds the primary or a secondary index to use based on what parameters were passed in.

Returns:

a term referencing the partition key column

See Also:

calcIndex()

getSortKey

public io.inversion.rql.Term getSortKey()

getSelectSpec

public java.lang.Object getSelectSpec()