com.github.davidmoten.odata.client.RequestHeader Maven / Gradle / Ivy

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package com.github.davidmoten.odata.client;

import com.github.davidmoten.guavamini.Preconditions;

public final class RequestHeader {

    public static final RequestHeader ODATA_VERSION = create("OData-Version", "4.0");

    public static final RequestHeader ACCEPT_JSON = create("Accept", "application/json");
    
    private final String name;
    private final String value;

    public RequestHeader(String name, String value) {
        this.name = name;
        this.value = value;
    }

    public static RequestHeader create(String name, String value) {
        return new RequestHeader(name, value);
    }

    public String name() {
        return name;
    }

    public String value() {
        return value;
    }

    public static RequestHeader acceptJsonWithMetadata(String metadata) {
        return new RequestHeader("Accept", "application/json;odata.metadata=" + metadata);
    }

    public static RequestHeader maxPageSize(int size) {
        Preconditions.checkArgument(size > 0, "maxPageSize must be > 0");
        return new RequestHeader("Prefer", "odata.maxpagesize=" + size);
    }
    
    public static final RequestHeader ACCEPT_JSON_METADATA_MINIMAL = acceptJsonWithMetadata("minimal");

    public static final RequestHeader ACCEPT_JSON_METADATA_FULL = acceptJsonWithMetadata("full");

    public static final RequestHeader ACCEPT_JSON_METADATA_NONE = acceptJsonWithMetadata("none");
    
    public static final RequestHeader CONTENT_TYPE_JSON = RequestHeader.create("Content-Type", "application/json");

    public static final RequestHeader CONTENT_TYPE_OCTET_STREAM = RequestHeader.create("Content-Type", "application/octet-stream");

    public static final RequestHeader TRANSFER_ENCODING_CHUNKED = RequestHeader.create("Transfer-Encoding", "chunked");

    public static final RequestHeader CONTENT_TYPE_TEXT_PLAIN = RequestHeader.create("Content-Type", "text/plain");

    public boolean isAcceptJsonWithMetadata() {
        return name.equals("Accept") && value.contains("application/json;odata.metadata=");
    }

    public boolean isContentTypeJsonWithMetadata() {
        return name.equals("Content-Type") && value.contains("application/json;odata.metadata=");
    }

    @Override
    public String toString() {
        return "[name=" + name + ", value=" + value + "]";
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        result = prime * result + ((value == null) ? 0 : value.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        RequestHeader other = (RequestHeader) obj;
        if (name == null) {
            if (other.name != null)
                return false;
        } else if (!name.equals(other.name))
            return false;
        if (value == null) {
            return other.value == null;
        } else return value.equals(other.value);
    }

    public static RequestHeader contentLength(int length) {
        return RequestHeader.create("Content-Length", ""+ length);
    }

    public static RequestHeader contentType(String contentType) {
        return RequestHeader.create("Content-Type", contentType);
    }

    public static RequestHeader contentRange(int start, int finish, int length) {
        return RequestHeader.create("Content-Range", "bytes " + start + "-" + finish + "/" + length);
    }

}