com.ericsson.otp.erlang
public class OtpErlangMap extends OtpErlangObject implements java.io.Serializable, java.lang.Cloneable
The arity of the map is the number of elements it contains. The keys and values can be retrieved as arrays and the value for a key can be queried.
OtpErlangObject.Hash
hashCodeValue
Constructor and Description |
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OtpErlangMap(OtpErlangObject[] keys,
int kstart,
int kcount,
OtpErlangObject[] values,
int vstart,
int vcount)
Create a map from an array of terms.
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OtpErlangMap(OtpErlangObject[] keys,
OtpErlangObject[] values)
Create a map from an array of keys and an array of values.
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OtpErlangMap(OtpInputStream buf)
Create a map from a stream containing a map encoded in Erlang external
format.
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Modifier and Type | Method and Description |
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int |
arity()
Get the arity of the map.
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java.lang.Object |
clone() |
protected int |
doHashCode() |
void |
encode(OtpOutputStream buf)
Convert this map to the equivalent Erlang external representation.
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boolean |
equals(java.lang.Object o)
Determine if two maps are equal.
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OtpErlangObject |
get(OtpErlangObject key)
Get the specified value from the map.
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OtpErlangObject[] |
keys()
Get all the keys from the map as an array.
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java.lang.String |
toString()
Get the string representation of the map.
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OtpErlangObject[] |
values()
Get all the values from the map as an array.
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decode, hashCode
public OtpErlangMap(OtpErlangObject[] keys, OtpErlangObject[] values)
keys
- the array of terms to create the map keys from.values
- the array of terms to create the map values from.java.lang.IllegalArgumentException
- if any array is empty (null) or contains null elements.public OtpErlangMap(OtpErlangObject[] keys, int kstart, int kcount, OtpErlangObject[] values, int vstart, int vcount)
keys
- the array of terms to create the map from.kstart
- the offset of the first key to insert.kcount
- the number of keys to insert.values
- the array of values to create the map from.vstart
- the offset of the first value to insert.vcount
- the number of values to insert.java.lang.IllegalArgumentException
- if any array is empty (null) or contains null elements.java.lang.IllegalArgumentException
- if kcount and vcount differ.public OtpErlangMap(OtpInputStream buf) throws OtpErlangDecodeException
buf
- the stream containing the encoded map.OtpErlangDecodeException
- if the buffer does not contain a valid external
representation of an Erlang map.public int arity()
public OtpErlangObject get(OtpErlangObject key)
key
- the key of the requested value.public OtpErlangObject[] keys()
public OtpErlangObject[] values()
public java.lang.String toString()
toString
in class OtpErlangObject
public void encode(OtpOutputStream buf)
encode
in class OtpErlangObject
buf
- an output stream to which the encoded map should be written.public boolean equals(java.lang.Object o)
equals
in class OtpErlangObject
o
- the map to compare to.protected int doHashCode()
doHashCode
in class OtpErlangObject
public java.lang.Object clone()
clone
in class OtpErlangObject